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Great food! Nice quiet restaurant. Great service. I will be returning again soon! I would definitely recommend!
Worse customer service. My 8 year old daughter didn't like the hard orange chicken and I asked the server if could switch the plate out and they said they cannot do it. So now I have to pay for something that my daughter didn't like. I have been coming here over 14 years and will not be coming back!
Great price. Good Thai food. Nice ambiance. Calamari batter was light and tasty. Pad See Ew was good but they use regular broccoli (maybe I should have requested the Chinese broccoli) Chinese broccoli with fried pork was perfect! Service was fast and efficient too.
This place is GREAT! We'd been wanting to try this restaurant for a while, and we finally had a chance to today! We were greeted promptly upon entering. Service is friendly, excellent and efficient. Very roomy and clean restaurant. They let us pick where we wanted to sit, so we chose a nice booth. It was hard to decide what to order because everything looked so good! We over-ordered and will enjoy the leftovers! Tom-kah soup is my absolute favorite and it was so delicious! The spice is served on the side, but we poured all of it in there! YUM! I hadn't had pad Thai in forever, but ordered that with chicken and it was wonderful. My daughter ordered the crab fried rice and the beef noodle soup and she loved both dishes. I also got a Thai tea and she got a Thai tea with boba. The food presentation was fabulous and portions are generous, served family style for sharing. They offer delivery on Grub Hub! We loved our lunch here and will definitely be back!
Service was great! We went on a weekend night, the food were served about 15 mins after ordered. Parking was not a problem for us as there're too many stores in the plaza. Pad Thai: 4.5/5. Tofu, pork, shrimp, and chicken included in the base price, beef and seafood option charges more. I'd say it's comparable to other popular Thai stores in Thai town DTLA. Good balance between noodles, peanuts, tofu, and veggies! Pork Jerky: 4/5. It's deep fried sliced pork, dip with the house special sauce. Very crispy. The sauce was good! It balances perfectly between sweet, sour, and savory. Wish the pork could be a little bit more tender. Papaya Salad: 5/5. You will love it if you love fish sauce, which I do! Recommended!
I have been to this place several times for years but never got to review it. My family wanted Thai food so we went to this place. We ordered the Thai fried rice, dearest crab meal, and the chicken pad Thai. My two favorites were the dearest crab and the Thai fried rice. The rice was seasoned well although a little greasy. Big pieces of chicken made this a meal. The dearest crab was delightful with the 2 generous crispy fried ball. It didn't come with a sauce but I asked for the sweet chili and some of the bbq sauce they use for the spare ribs and that competence the dish well. Price wise, it is at par with other places close by. Service was quick and friendly. The place itself might need a little updating since it's a little dated but the food is worth it.
#7 for 2025 The overall service is generally good. The girls working the tables are polite and nice. Are attentive too making sure our drinks are filled. Parking is easy in this strip mall shared with NY Pizza. This Sunday evening was exceptionally busier than normal with most tables occupied when we entered. We were told to choose our table and settled into the last booth by a window. The menus were brought over but the water was not until after we ordered. I think they skipped a rhythm in their service. As busy as it was, and I saw a larger party submit their order before ours, the dishes came out quick. It was just my wife and I tonight. She was a bit under the weather so tonight's dinner was catered to her. TOM YUM CHICKEN $13 An excellent starter for a chilly evening to warm up our appetite. Loved the spicy lemon grass and lime flavor with the chicken and mushroom. Really helps the throat feel better too. BEEF SALAD $14 The Sliced beef marinated with lime juice, fresh chili, onion, tomatoes, and cucumber on a bed of lettuce is quite good on its own. I enjoy it better poured over my rice not to waste any of that good flavor from all the juices. SPICY CRISPY CHICKEN $13 This was a new dish for me. As many items I've had over the decades with Thai food it did not disappoint. The crispy chicken skin, bell peppers, beans with the spicy Thai curry sauce was nice and crunchy. On previous visits we've had other dishes and were also good. PAD SEE EW $14 I always get this with chicken to go with the flat rice noodles stir-fried with broccoli and egg. Place this over your rice then drizzle with soy and chili for added flavor. Could use a little more meat. GARLIC SHORT RIBS $13 Can't go wrong with ribs cooked with black pepper and garlic. That's a winning combination all day long. PAD PED CATFISH $16 This deep fried catfish stir-fried in spicy chili paste sauce is another of my favorites. Just thinking about that spicy taste makes my mouth drool. The Spicy Fish is about the same but uses tilapia instead of catfish. I feel the catfish comes off better in this cooking method than the tilapia. RED CURRY $13 All the curries are good but our go to is the red curry. Love the basil in there and wish there was a little more. Try their pineapple and pumpkin curries too. Those are not seen at other Thai restaurants so it's a bit of a treat to have them here. MANGO W/STICKY RICE (SEASONAL)12 If you're new to the Thai cuisine a must to try is the Mango Sticky Rice. Fresh sweet Mango served with sweet sticky rice and coconut milk topped with dried mung bean. That's a nice treat especially on those hot summer nights. What I like about Thai Diamond is their $12 lunch specials, Monday to Friday, from 11am to 3pm. They have a larger selection than most that includes garlic pork ribs, sweet & sour chicken, Thai bbq chicken, Thai bbq spare ribs, chicken pad thai and several more options to choose from. Now that i'm finish with this review I have a sudden urge to go back tonight.
This is the best Thai place in Rancho Cucamonga! I have been coming here since I was a kid and the taste has been consistent for years. Love this place!
food soup was addicting i couldn't get enough, if u come here u have to try the sweet and sour soup , i got mild (it comes with shrimp and mushroom, and it has the perfect amount of sour) crab fried rice - not my fav only bc i couldn't taste or see the crab , i would have liked more crab but fried rice paired very nicely with the soup service not bad but was very hot when i first came in i was sweating and got even hotter just sitting there , and this was before i had the soup my water was refilled before it got empty so that's always nice not awful service, not out of this world service it was just normal ambiance family friendly very standard thai restaurant nothing fancy but could use a little update since its looked exactly the same since for the past 15 years parking is always good prices are also really good i spent $32 before tip for the soup and rice and that was more than enough for two adults, we had leftovers to take home
Thai Diamond Bar.B.Q. is undoubtedly the best Thai restaurant in Rancho Cucamonga. This place is always nicely decorated, clean, comfortable, and perfect for a relaxing meal. The staff is friendly and the food is always on point. Their lunch specials offer great value. The price is still affordable even with the recent price increase. Their service is consistently great and the restaurant is always very clean and well-maintained. Delicious food and outstanding service, all at a great price! If you live in Rancho Cucamonga/Ontario and love Thai food, then you should give this place a try. You'll not be disappointed!
The mango sticky rice I've been asking for all year is finally here. SOOOO GOOD!! Friendly service, great food. Very clean!
My Favorite Thai Restaurant ever! been coming here since I was a kid open so many and I don't think I'll ever go anywhere else.
Our first time trying this Thai spot in Rancho Cucamonga and we loved it! The fried tofu was perfectly crispy on the outside and soft on the inside, and the peanut sauce was so yummy. The staff was super friendly and even surprised us with heart-shaped fried rice for the month of love. Definitely a must-try!
2 months ago
My husband and I started coming here when we first moved here over a decade ago. We recently dined in and found out they have a new owner. They have a nice interior with some seating area for larger parties. Both the food and service have been excellent. The most recent time we dined in we got House Special S1 and S4 along with papaya salad and the satay combo. Also , any time they have ripe mango, you must order the mango with sticky rice. read more
Didn't feel like cooking ... ordered Thai. Everything was good but the portions are definitely not really shareable. Spent $75 on 4 small plates- broccoli with oyster sauce/ added beef, 2 pad see ew, 1 curry. Service was quick- less than 20 minutes Ambiance- cute place read more
22 days ago
Great food! Nice quiet restaurant. Great service. I will be returning again soon! I would definitely recommend! read more
20 days ago
Worse customer service. My 8 year old daughter didn't like the hard orange chicken and I asked the server if could switch the plate out and they said they cannot do it. So now I have to pay for something that my daughter didn't like. I have been coming here over 14 years and will not be coming back! read more
Business owner information
Shane S.
Hi Jackie, thank you for supporting our restaurant for over 14 years.…
Great price. Good Thai food. Nice ambiance. Calamari batter was light and tasty. Pad See Ew was good but they use regular broccoli (maybe I should have requested the Chinese broccoli) Chinese broccoli with fried pork was perfect! Service was fast and efficient too. read more
10 months ago
This place is GREAT! We'd been wanting to try this restaurant for a while, and we finally had a chance to today! We were greeted promptly upon entering. Service is friendly, excellent and efficient. Very roomy and clean restaurant. They let us pick where we wanted to sit, so we chose a nice booth. It was hard to decide what to order because everything looked so good! We over-ordered and will enjoy the leftovers! Tom-kah soup is my absolute favorite and it was so delicious! The spice is served on the side, but we poured all of it in there! YUM! I hadn't had pad Thai in forever, but ordered that with chicken and it was wonderful. My daughter ordered the crab fried rice and the beef noodle soup and she loved both dishes. I also got a Thai tea and she got a Thai tea with boba. The food presentation was fabulous and portions are generous, served family style for sharing. They offer delivery on Grub Hub! We loved our lunch here and will definitely be back! read more
Service was great! We went on a weekend night, the food were served about 15 mins after ordered. Parking was not a problem for us as there're too many stores in the plaza. Pad Thai: 4.5/5. Tofu, pork, shrimp, and chicken included in the base price, beef and seafood option charges more. I'd say it's comparable to other popular Thai stores in Thai town DTLA. Good balance between noodles, peanuts, tofu, and veggies! Pork Jerky: 4/5. It's deep fried sliced pork, dip with the house special sauce. Very crispy. The sauce was good! It balances perfectly between sweet, sour, and savory. Wish the pork could be a little bit more tender. Papaya Salad: 5/5. You will love it if you love fish sauce, which I do! Recommended! read more
6 months ago
I have been to this place several times for years but never got to review it. My family wanted Thai food so we went to this place. We ordered the Thai fried rice, dearest crab meal, and the chicken pad Thai. My two favorites were the dearest crab and the Thai fried rice. The rice was seasoned well although a little greasy. Big pieces of chicken made this a meal. The dearest crab was delightful with the 2 generous crispy fried ball. It didn't come with a sauce but I asked for the sweet chili and some of the bbq sauce they use for the spare ribs and that competence the dish well. Price wise, it is at par with other places close by. Service was quick and friendly. The place itself might need a little updating since it's a little dated but the food is worth it. read more
2 months ago
#7 for 2025 The overall service is generally good. The girls working the tables are polite and nice. Are attentive too making sure our drinks are filled. Parking is easy in this strip mall shared with NY Pizza. This Sunday evening was exceptionally busier than normal with most tables occupied when we entered. We were told to choose our table and settled into the last booth by a window. The menus were brought over but the water was not until after we ordered. I think they skipped a rhythm in their service. As busy as it was, and I saw a larger party submit their order before ours, the dishes came out quick. It was just my wife and I tonight. She was a bit under the weather so tonight's dinner was catered to her. TOM YUM CHICKEN $13 An excellent starter for a chilly evening to warm up our appetite. Loved the spicy lemon grass and lime flavor with the chicken and mushroom. Really helps the throat feel better too. BEEF SALAD $14 The Sliced beef marinated with lime juice, fresh chili, onion, tomatoes, and cucumber on a bed of lettuce is quite good on its own. I enjoy it better poured over my rice not to waste any of that good flavor from all the juices. SPICY CRISPY CHICKEN $13 This was a new dish for me. As many items I've had over the decades with Thai food it did not disappoint. The crispy chicken skin, bell peppers, beans with the spicy Thai curry sauce was nice and crunchy. On previous visits we've had other dishes and were also good. PAD SEE EW $14 I always get this with chicken to go with the flat rice noodles stir-fried with broccoli and egg. Place this over your rice then drizzle with soy and chili for added flavor. Could use a little more meat. GARLIC SHORT RIBS $13 Can't go wrong with ribs cooked with black pepper and garlic. That's a winning combination all day long. PAD PED CATFISH $16 This deep fried catfish stir-fried in spicy chili paste sauce is another of my favorites. Just thinking about that spicy taste makes my mouth drool. The Spicy Fish is about the same but uses tilapia instead of catfish. I feel the catfish comes off better in this cooking method than the tilapia. RED CURRY $13 All the curries are good but our go to is the red curry. Love the basil in there and wish there was a little more. Try their pineapple and pumpkin curries too. Those are not seen at other Thai restaurants so it's a bit of a treat to have them here. MANGO W/STICKY RICE (SEASONAL)12 If you're new to the Thai cuisine a must to try is the Mango Sticky Rice. Fresh sweet Mango served with sweet sticky rice and coconut milk topped with dried mung bean. That's a nice treat especially on those hot summer nights. What I like about Thai Diamond is their $12 lunch specials, Monday to Friday, from 11am to 3pm. They have a larger selection than most that includes garlic pork ribs, sweet & sour chicken, Thai bbq chicken, Thai bbq spare ribs, chicken pad thai and several more options to choose from. Now that i'm finish with this review I have a sudden urge to go back tonight. read more
6 months ago
This is the best Thai place in Rancho Cucamonga! I have been coming here since I was a kid and the taste has been consistent for years. Love this place! read more
food soup was addicting i couldn't get enough, if u come here u have to try the sweet and sour soup , i got mild (it comes with shrimp and mushroom, and it has the perfect amount of sour) crab fried rice - not my fav only bc i couldn't taste or see the crab , i would have liked more crab but fried rice paired very nicely with the soup service not bad but was very hot when i first came in i was sweating and got even hotter just sitting there , and this was before i had the soup my water was refilled before it got empty so that's always nice not awful service, not out of this world service it was just normal ambiance family friendly very standard thai restaurant nothing fancy but could use a little update since its looked exactly the same since for the past 15 years parking is always good prices are also really good i spent $32 before tip for the soup and rice and that was more than enough for two adults, we had leftovers to take home read more
Thai Diamond Bar.B.Q. is undoubtedly the best Thai restaurant in Rancho Cucamonga. This place is always nicely decorated, clean, comfortable, and perfect for a relaxing meal. The staff is friendly and the food is always on point. Their lunch specials offer great value. The price is still affordable even with the recent price increase. Their service is consistently great and the restaurant is always very clean and well-maintained. Delicious food and outstanding service, all at a great price! If you live in Rancho Cucamonga/Ontario and love Thai food, then you should give this place a try. You'll not be disappointed! read more
4 months ago
6 months ago
The mango sticky rice I've been asking for all year is finally here. SOOOO GOOD!! Friendly service, great food. Very clean! read more
1 year ago
8 months ago
Our first time trying this Thai spot in Rancho Cucamonga and we loved it! The fried tofu was perfectly crispy on the outside and soft on the inside, and the peanut sauce was so yummy. The staff was super friendly and even surprised us with heart-shaped fried rice for the month of love. Definitely a must-try! read more
1 year ago
I always come here for the lunch special. I have many options and have a great deals. The service is always a fast. The ambience is always welcoming. read more
1 year ago
Nice restaurant and environment. I ordered the spicy crispy chicken, and I would not reccomend it. It came I took a bite the flavor wasn't there and it wasn't crispy. I asked to send it back and they said no. I ordered the chicken pad see ew and they used traditional broccoli instead of the broccolini. The spicy mint leaves with beef was average for flavor. Vegetable egg roll was good. Chicken "Saw Te" skewer was better than the beef. The noodles were bland but the shrimp inside was good size. Thai tea was good. I personally probably won't come back here. Average for flarlvors. Nothing was like wow that's really good. read more
1 year ago
Food is amazing , and service is great. I am a Thai lover, and will definitely recommend this place to my friends. I personally recommend their seafood fried rice. :) read more
This is my third time visiting this restaurant, and it never disappoints. Although it may not seem very appealing from the outside, as it's tucked in a corner of a quiet plaza, or you won't find this placed hyped or heavily advertised on social media, it's truly one of those local spots that I first think of when craving Thai food. Being a small shop, the workers are attentive and quick with their service. From the appetizers to the main dishes, every bite was fresh and delightful, especially if you enjoy extra spicy food! Their Thai milk tea is perfect for balancing out the spice if you need it. read more
1 year ago
Best Thai food ever in town!!! I love their bbq ribs and sea food soups, definitely will come back again!!!! read more
Corner restaurant in a pretty dead plaza. There was plenty of parking and seating on a weekday during lunch. We found prices to be fair for the portions. Initially prices looked cheap, but portions were also smaller than a lot of other places, so I think it's fair. We ordered a chicken pad thai, pineapple fried rice, spicy catfish, and bbq ribs. We found most of the food okay in terms of flavor, but the chicken in the pad thai was dry and the shrimps in the fried rice were mushy. I think my favorite was probably the thai tea. This spot is closer to a 3.5/5 for me, but I rounded up because our server was friendly. read more
Business owner information
Shane S.
Ada…
8 months ago
1 year ago
1 year ago
My family and I had a wonderful time eating here tonight. The owners are warm, the service is excellent, and the food is SO DELICIOUS with big portions to share or eat alone and bring home leftovers! I especially enjoyed the shrimp pad see ew noodles! Added an extra egg which made it more rich. It's the best pad see ew I've had in a long time! We'll definitely be coming back soon! read more
1 year ago
Thai Diamond always offers Excellent food. They have a great staff always kind, professional and friendly. If you want great Thai food this is the place! read more
8 months ago
The food is great! I am a fan of mint in my Thai food but you can ask for no mint and 3 levels of spice (mild, medium or hot) I love this place and the staff is very friendly. Nice place and clean, the restrooms were also clean! read more
1 year ago
11 months ago
a hidden gem!!! the food was phenomenal, so yummy, authentic, and full of flavor. - i ordered a thai fried rice (chicken) & spicy mint noodle (drunken noodles, chicken) and my total was $28. the portions are pretty decent in my opinion. definitely will be back to try more of their dishes.. this is probably one of the best thai food ive had in rancho yet. the service was quick & the staff were very polite and speak english well. the ambiance of the restaurant itself is a very traditional authentic thai restaurant, very cozy. this place is truly a hidden gem, in a shabby plaza but parking is plentiful! will def come back :) read more
1 year ago
1 year ago
Always a consistent great Thai flavor. Best is Rancho Cucamonga! Would go back again for Thai food read more
1 year ago
Awesome food, really delicious. the pad see ew is juicy and flavorful, very filling and easy on my wallet. my go to thai place! read more
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More info about Thai Diamond Bar B Q
9581 Foothill Blvd
Rancho Cucamonga, CA 91730
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(909) 941-1432
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http://www.thaidiamondbbq.com
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