Professional, welcoming, and very little (if any!) use of AI!! Real artists doing real work. American traditional, realistic, black and grey. They do small stuff - but wow! The big pieces are where they shine. I have a dragon on my back from William - he covered a tattoo from my younger years (that one didn't go well and it took many years to find someone I trust). I won't go to anyone else. read more

Mammoth American Tattoo - Dragon tattoo - Tattoo Near Me - Denver, Colorado

I wanted to share my experience after searching for the right artist and shop for a tattoo I have envisioned for several years. Following the passing of my parents, I decided to finally move forward with the piece. After extensive research, I chose William at Mammoth American Tattoo. From my initial email to the consultation, the experience has been excellent. When I arrived at the shop, the staff was incredibly welcoming. William spent nearly an hour discussing the design and my requested changes with me. He provided great insights into color theory, explaining what would and wouldn't work to ensure the best result. I returned today to begin the tattoo, and both William and Ripley were fantastic. I am very happy with the linework completed during this first session. William also took the time to thoroughly explain the aftercare process. I will continue to share updates as we complete the piece, but I highly recommend William and Mammoth American Tattoo to anyone looking for a professional and welcoming shop. read more

Mammoth American Tattoo - Day 1 - Tattoo Near Me - Denver, Colorado

From the moment I walked in I felt welcomed in a warm and comfortable environment. There is so much hospitality with the service that any nerves I had going in were gone immediately. William was incredible. His tattooing skills are unbelievable, great conversation and just all around the people here are just good peeps. Also, fantastic music choices. Highly recommend this place to anyone and everyone. This is a safe space for all. read more

Mammoth American Tattoo - Tattoo Near Me - Denver, Colorado

I can't say enough good things about this tattoo shop. Everyone was so kind and friendly, I felt so comfortable being there. Such amazing people who work there! My son who passed away two years ago was an avid skateboarder whose catch phrase was "Don't trip" as in don't worry about it, everything is ok. My son would also break his boards constantly and then hang them on his wall as art. I went in with a general idea of what I wanted, but Owlyn transformed my idea into something truly amazing. It was perfect. Owlyn, with only the knowledge that my son was a skateboarder, designed a broken skateboard in the shape of a heart with "Don't Trip" on the sides. I couldn't be happier. read more

Mammoth American Tattoo - Tattoo Near Me - Denver, Colorado

Stopped in without an appointment and was immediately greeted by Riply at the front desk. She took the time to make sure we saw each artists work and took time to explain the answers to our questions in details. When the tattoo started I was booked with the shop owner William said who's a cool dude who again will explain things to you in detail and make sure that you leave with what you wanted. My friends and I all agree that with all of our tattoo experiences, this has exceeded them all. Great shop will be back. read more

Mammoth American Tattoo - Tattoo Near Me - Denver, Colorado

The atmosphere is friendly with a great vibe. The artists are professional, genuine and exceptionally gifted. Only visit if you're fun, kind and ready to make new friends while getting some amazing artwork. read more

Flew to Denver to see Franti at Red Rocks. (Epic show!) walking to brunch this morning, we passed a tattoo shop and made a joke about getting lyrics tattooed on us to commemorate the experience. I checked yelp and the review that popped up was about a similar experience and had a picture showing the tattoo. Called & they said they take walk-ins. Walked in the door and the guy was wearing a shirt from Ace Tattoo in Charlotte. Serendipity!!! Thanks to Chad and Owl for our permanent souvenirs! Talented artists, amazing line work, and reasonably priced. Go see them and tell them I said hi! read more

Fantastic shop. Owlyn is very professional and talented. Very welcoming atmosphere. Highly recommended to anyone who appreciates high quality work. read more

Mammoth American Tattoo - Tattoo Near Me - Denver, Colorado

I'm from Illinois I was in the area for work & I had an idea for a tattoo & Called every shop in the area Mammoth was the only shop that had an opening, Literally booked an appointment & arrived an hour later, The Artist (who's name I forgot) listened to my idea drew it up & Made it PERFECT , Now if I'm ever in need of another tattoo & I'm in Denver I'm 100% going here! I've gotten alot of compliments on it already! Thanks Mammoth for a kickass time! read more

Mammoth American Tattoo - Work done @ Mammoth - Tattoo Near Me - Denver, Colorado

My friend and I both went in for walk-in tattoos that were quickly booked for us by a friendly host at the front. The two artists working with us, Lewis and William, were both accommodating to our ideas and had amazing art on display! I would definitely recommend Mammoth American, along with those artists, especially because I'm from out of town and they made me feel very welcome and informed. read more

What an experience to be in this space. EVERYONE is professional and attentive to your needs. I've been tattooed by the owner since 1995 and have seen his dedication to craft soar. In this world filled with velocity and convenience, I'm glad I can work with my artist (William) on my ideas, set a date and walk out with artwork that stands the test of time. He has cultivated an open space filled with possibility. He and his staff respect the work they create for everyone. They professionally offer suggestions to the betterment of your creation. They are in no short supply of integrity. BOOK THE CONSULT, PAY A DEPOSIT AND SHOW UP WHEN YOU BOOK THE APPOINTMENT. They will stand behind their work and welcome you back anytime. DO IT! read more

I highly recommend checking this shop out. I did a session with DJ Chilcote after seeing his work on Instagram. I genuinely appreciate the fact that he is extremely humble and honest. This was my first large piece and color piece, I feel that I couldn't have chose a better artist to do the work. If you want a clean tattoo that even you'll be shocked looking at every time, he's your man. He educated me on traditional tattoos and some of the more newer age styles that have been coming up, which was rad because it's something you don't really get to chat about that often. I also want to point out that they greeted me and offered me water or coffee. The atmosphere they've created at their shop is something you don't find that often. I appreciate you DJ and mammoth crew! Thanks for a great experience. read more

Mammoth American Tattoo - Tattoo Near Me - Denver, Colorado

Our charity went as a group to get tattoos and everyone was great. Chad organized the whole thing and our entire experience was perfect. Very professional staff, super safe and clean environment and the work was fantastic. Thanks all. read more

Mammoth American Tattoo - Tattoo Near Me - Denver, Colorado

Was in town on vacation and was looking for an artist who specializes in script. That's how I found Ian, however I waited until the last minute to try & book an appointment. Bad idea...luckily for me he was kind enough to come in early the next day to get my tattoo done. I love it! The shop had such a great vibe & everyone we meet was so friendly. Thank you Ian! #SickLines #BradPittIsStillHot read more

Mammoth American Tattoo - Tattoo Near Me - Denver, Colorado

William and his shop are amazing! I went in for a quick consultation and was able to schedule a session with William a week later. He is a super nice guy, knows the neighborhood well, and most importantly did incredible work. 10 days later and things are healing up nicely. Thanks William! Also - the shop is taking COVID very seriously (masks required, 2 people max in one area, hand sanitizer everywhere, etc.), which I really appreciated. read more

Mammoth American Tattoo - Tattoo Near Me - Denver, Colorado

Excellent service! Friendly welcome at greeting and helpful with questions. Lewis did an excellent job adding more coordinates to an already existing tattoo on my leg. Very professional and high quality service. Highly recommend. read more

Super nice place! All the staff were extremely friendly, fun, and knowledgeable! Chad did awesome. I'll definitely be back and would recommend! read more

Guys. Save yourself the trouble of wondering where to go to get a tattoo in Denver and check these guys out at Mammoth. Flew in for a long weekend trip to see a show at redrocks and visit some friends and wanted to get a tattoo to commemorate my dad while I was here. There are sooo many tattoo shops in the downtown Denver area and I completely lucked out by finding these guys. They have an amazing shop back in a nice neighborhood on 26th st with plenty of parking and an open, friendly vibe. I came as a walk-in, and though there weren't any artists available when I got there, they told me to come back in an hour and they'd get me taken care of. The whole process was low key, and easy. Everyone I met (including the owner who is also a Va native) were chill, friendly, and easy to work with. Eric was the artist that took on my tattoo request and he absolutely knocked it out of the park. Such a nice human, and threw down a song verse consisting of super small text with absolutely zero issues. The other artists in the shop came by as I was getting my tattoo done and complimented him on his work too, and I really love that the other artists were all so stoked at the intricate work he was doing. Just such good vibes all around. I'll definitely try and swing back through the next time I'm in town to get more work done. Thank you guys for an incredible souvenir from this trip to Denver. read more

Mammoth American Tattoo - Immediately after being finished. - Tattoo Near Me - Denver, Colorado

See all

After dealing with other tattoo shops not being able to fit me in while I'm Denver on vacation I called mammoth and was told I could come in right away, as I got there I was greeted by Chad who was nothing but an amazing artist, he worked with me quickly and did an amazing job and even recommended sights to go see while I was in town! Cannot recommended this shop enough. read more

I am SO happy I found Chad at Mammoth! I've been searching for the last several months to find an artist to finish my back piece, which is also a cover up. Chad was really honest and straight forward with me during our first consultation, and said we'd spend a lot of time drawing and discussing until we found something or we didn't. First session, he spent over an hour drawing on my back. We changed directions a few times, and he was really patient and worked with me until we were both happy with the final design. The tattooing went quickly and smoothly on my back - so much so that we even had time to do another small piece on the back of my arm. Can't wait for this to finally be finished by Chad! read more

Walked right in. Great staff. Super friendly. Clean and following all guidelines. Will be making this a stop every time we are in Denver. read more

Mammoth American Tattoo - Wile E. Coyote finally got roadrunner - Tattoo Near Me - Denver, Colorado

See all

My friend and I were visiting Denver from California and were staying near this tattoo shop. We looked them up and saw that Ian Rice specialized in script, which is what we were looking to get. We waited until the last minute, but when we called, Ian was super nice about squeezing us into his busy schedule. He even came in early and opened up the shop just for us in order to ensure that he could do our tattoo. The shop was super cool, clean, welcoming, and the staff were friendly. Ian did a great job with our script tattoo and he was very personable and professional. I would definitely recommend! read more

I've gotten two sleeves done by William. His work is excellent! Everyone at the shop makes you feel comfortable and welcome, the shop is very clean, and all the artists are talented. Highly recommend! read more

What an amazing tattoo shop. It's small but serviceable, and also comfortable. And its artists know exactly what they're doing. I had a custom tattoo done by DJ Chilcote and he walked me through every step of it, showing me what the product would look like. And he took good care of getting the tattoo done every step of the way, with quality tools, inks and more. This is a great little place. A little out of the way from Colorado Boulevard, but well worth the visit! read more

William Thideman is a tattoo God. I started my back piece with him yesterday and it is amazing. I completely gave up control and let him create the start of a magnificent work of art on my entire back. I am so happy I decided to go with him. William and his staff are very professional, clean and from what I observed all are very talented. Mike the studio manager is great. He is very friendly and helpful. Everyone made me feel right at home. I can't wait for my next session. Thanks guys for a hands down great experience. read more

See all

I had an amazing experience at Mammoth recently! Jeremy was a very accommodating shop manager and got me in same day for my spontaneous tattoo. Lewis was super fun and professional. Getting a tattoo under your butt can be a strange experience BUT Lewis made me feel super comfortable. I'll be seeing you guys soon to continue adding to my tattoos! read more

Had a great experience with Jesse at Mammoth American. At the end of a 3 day hiking trip my brother and I decided on impulse to get a quick tat in honor of our father. Not sure if we'd have the time before our flight, these guys came highly recommended. Jesse reached out to his scheduled appointment and asked if he could push him back about 15 minutes (dude was super cool about it) and we both ended up getting our ink. A very simple image of military dog tags was brought to life by his artistry, attention to detail and obvious experience. He consulted with us individually at length (despite the last minute kind of a rush job!) and made adjustments to accommodate existing tattoos. You guys are awesome and made a great trip super special. read more

Had a great tattoo experience with Chad! My friend and I both got small tattoos (her first and my second). Chad did a great job drawing out our tattoos- we both agreed the designs he drew were better than the pictures we showed him. He was very professional and the shop was extremely clean. He was friendly and made for a comfortable tattoo experience. read more

My son has a "travel tattoo arm" - whenever he travels, he gets a tattoo on his right arm. We were in Denver for the day and so he was looking for a place to go. We drove by a couple of places that looked kind of sketchy and ended up at mammoth American tattoo. They weren't terribly busy and Ian took him without an appointment. Ended up with a really clean-looking tattoo representing Colorado plus Ian was super nice and personable. read more

Mammoth American Tattoo - Tattoo Near Me - Denver, Colorado

Had a consult with DJ Chilcote, put down a $100 deposit just to talk about booking his time in the future. I finally get to a place schedule wise that I can get some work done and he says he can't give me an overall estimate. It's just take it or leave it $150 an hour for as long as he wants it to last... I say no thanks if you can't give me an estimated total or time I'm out. I'm not just going to sit there while you take your sweet time collecting that kind of money per hour. I ask for my "deposit" back and he says it's non refundable. So I'm out $100 just for giving this guy a chance. Wow and good luck with practices like that... I have nothing good to say about this artist or this shop. read more

William the owner has 25yrs in, and you can see it in his work, and how the shop is run as well. All artists here are high caliber, and cool down to earth people. I've had only positive experiences getting tattooed here. Pictures on instragram can't give you any idea of personalities or experience which to me at least, is a big part of it. These are good people, and it's clear how they treat everyone who comes in. read more

Absolutely fantastic studio. William is my artist and I couldn't be more pleased. I've been working with him for a couple years now on a sleeve and at this point I trust him completely. I used to bring in pictures of ideas but now we just talk about it and I let him do what he sees. This is a very cozy studio in an old house and you get tons of privacy, you're not in a little both. William and Matt, another incredible artist at the studio have their own rooms upstairs which I really appreciate. If you're looking for true custom artwork this is the premier spot in Denver. Almost hate to review it for fear of a long wait list but these guys deserve the praise! read more

It's been 8 years since my last tattoo and I searched high and low for the right shop, the right vibe, and the right talent. William is beyond a 5-star artist and professional... A thoughtful craftsman and doer of good all around. Love the whole staff and of course, the clean environment and practices. You'll leave wanting to stay friends with the whole group... And they'll welcome you back just to hang! read more

Never have I been so disrespected by a company or shop. I have been a returning customer of Michael Martinez for a little over a year now, but now I will never let him tattoo me or will never recommend him or this shop to anyone ever again. A few months back I scheduled my 6th appointment with Michael to do another big part of my sleeve he already had started for me. The original outline he drew for me I loved! I made an appointment that day to FINISH the piece in two weeks. Two weeks later I come back in, expecting to be there a while since that morning Michael told me it would be 150$ for our session that day. It turned out to be a 40 minute pointless shading session. When I asked him why he wasn't finishing it he told me "he didn't have time to today". I left the shop pretty upset and Michael did message me and apologized but also said he would "hook me up" next time, I told him I would message him when I had money for another session with him. A month goes by and I start to realize my piece isn't looking right. My lion had a 3rd left leg. When I confronted Michael about the mistake that HE made, all he could say to me was "it was an honest mistake" and he told me to stop being rude to him. I didn't realize that trusting a tattoo artist to not mess up his OWN artwork was rude, but okay. I told him I wasn't going to go back to him because of this incident. Another couple months go by and I had already told a few people about my experience with him and word got back to Michael that I was still really upset about it. He texted me and asked me if he could fix it, he told me he would fix the 3rd leg for free, but I wanted the whole piece finished at this point. I asked how much he would charge me to finish it and he completely forgot about the two separate sessions he made me pay 150$ each for and asked me to pay ANOTHER 150$ after he said he would hook me up apparently. I told him that wasn't fair to me and he asked for my opinion on what I should pay and we agreed on 60$. Just to reassure myself I wasn't going to get cheap work done because of the dramatic price drop I asked him and he told me that's now how he works. It obviously is though because I now have a regular 4 legged lion but with terrible color job. It is very light. The shades don't even look like realistic colors(like I wanted) and it isn't even completely filled in! You can still see my skin color in parts! I am so absolutely disgusted that someone wants their own artwork to look like this and also that someone would treat their very loyal customers like this. If he will do it to me he will do it to anyone. Do not go here. Ever. Disgusting. read more

Mammoth American Tattoo - This is the "finished" piece - Tattoo Near Me - Denver, Colorado

See all

Having had numerous bad tattoos, being referred to William at Mammoth was the best thing that could have happened to me. My girlfriend is happy to criticize my old work now as my new stuff is AWESOME. No one can tell its a coverup and I can say I've never been involved with a business with a more "cheers" neighborhood friendly environment. read more

William Thidemann is a fantastic and very talented tattoo artist. If you're looking for something of high quality he is your man. Get to know him and his business associates. No messing around with this group. Best work in Denver in my opinion. The atmosphere there at mammoth tattoo is very professional yet very personal. Very intimate and open, not your average tattoo/groups/neon lights kind of place. That's unfortunate for others. would highly suggest if you were looking for a future artist to consider William Thidemann. Schedule a consult and you both will figure out right away what you may, or may not, want to move forward with. It's surely worth your time, your money, and your experience. read more

I highly recommend Mammoth. After months of trying to get an appointment with various other shops for touching up an old tattoo and getting a new one, I decided to take a chance on a walk in one Saturday here at Mammoth. The old and new tattoo were both very simple and not larger than a couple inches. Hunter at the front door could not have been more friendly and inviting, especially for someone like me with very minimal tattoo experience :). He let me know that Chad would be able to fit me in later that afternoon, and I'm so glad he did! Chad was just as nice and professional. He seemed genuinely enthusiastic about my little tattoos and took extra care and time to make sure they were just right. I really appreciated the welcoming atmosphere as well as all of the upfront information about how serious the shop takes keeping everything clean and sterile. Thank you Hunter and Chad! I'm lovin my new ink! read more

I had went to another tattoo shop to get a quote. The artist didnt even give me the time of day unless I scheduled an appointment. I reached out to Dj Chilcote and he did more than I could have asked for. He gave me several options and made me feel important. I got my tattoo done that same day and he made sure I was comfortable and that I loved the design. I highly recommend DJ because he actually cares about his clients and not about just making a quick buck. I will be back! read more