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Diho Siam is a premier Thai restaurant in Lake Forest, CA, serving an array of delectable Asian restaurant dishes that blend traditional flavors with modern twists. Our menu features a diverse range of options, including mouth-watering Chinese restaurant favorites and authentic Southeast Asian restaurant specialties. At Diho Siam, we take pride in using only the freshest ingredients and time-honored cooking techniques to create an unforgettable dining experience. Whether you're in the mood for spicy Thai curries, savory noodle dishes, or fragrant stir-fries, our expert chefs are dedicated to crafting each meal with love and care. Conveniently located at 23600 Rockfield Blvd #2l, Lake Forest, CA 92630, Diho Siam is the perfect destination for foodies and families alike. Our cozy and inviting atmosphere makes it an ideal spot for casual gatherings, special occasions, and everyday meals. Come taste the rich flavors of Thai restaurant, Asian restaurant, Chinese restaurant, and Southeast Asian restaurant cuisine at Diho Siam today!

Diho Siam Review Summary

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4.3
(305 Reviews)
5
4
3
2
1
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Daniel Chimenti
Daniel Chimenti -Google user
Edited 3 months ago
Tasty food. Good portion sizes. I have been to the location in Mission Viejo and I would say it is comparable. I got the pan-fried noodles with beef over a bed of lettuce. Flavorful sauce and good amount of beef
Dine inDinner$10–20Atmosphere: 3No waitPlenty of parkingFree parking lot
warit srimadee
warit srimadee -Google user
Edited 3 years ago
Delicious with Thai and Chinese style and after course will surprize with Fortune Cookie
babette jolie
babette jolie -Google user
11 months ago
Cute place. Good food. Clean. Nice service. Prices are very good. I will be going here for Thai food from now on.
Dine inDinner$20–30Atmosphere: 5Soup, Pad Thai Noodle DishHighly recommendLarge vegetarian selectionMany dishes can be customized to be vegitarian.Plenty of parkingDuring lunch time the parking is limited. Dinner time the parking is plenty. This is due to work lunch rush.No stairs. Have tables and booths.
Axel V
Axel V -Google user
a year ago
Just had lunch at Diho Siam in Lake Forest, and it was spot on! The pad thai was flavorful, and the portions were generous—perfect for a laid-back meal.
Dine inLunch$10–20Atmosphere: 5
Richard Brun
Richard Brun -Google user
6 months ago
Every time I’m privileged to eat at DIHO SIAM it’s consistently great tasting food. The service is the reason why I come here. Meet Nina, an impeccable waitress who focuses on customer experience. Being recently handicapped (2017) I’m grateful to that there’s professionals out there...Read More
Atmosphere: 5
Ricardo Un
Ricardo Un -Google user
7 years ago
Really good Chinese food. Customer service is always great.
Said Yanik
Said Yanik -Google user
9 months ago
I had the shrimp yellow curry entree. They give a pretty large container of rice with the meal. Taste was good. I like that they put a good number of shrimp in there
Dine inLunch$20–30Atmosphere: 5
Ali Cat
Ali Cat -Google user
5 years ago
Love Diho! I like to order the Tom Kha soup with shrimp, and Avocado curry with shrimp and scallops (green curry, least spicy) and brown rice. Delicious food, friendly servers. Parking can be hard depending on when you go bc its basically a huge food...Read More
Maria Pope
Maria Pope -Google user
3 years ago
I love how authentic and traditional the food is here. (They even have the 1970s Tom Jones background music 😂👍🏼). …
Galina Hoppe
Galina Hoppe -Google user
3 years ago
Amazing flavors and great good. Friendly staff, would come again!
Christy Nero
Christy Nero -Google user
3 weeks ago
Awesome place nice atmosphere clean and nice friendly service and food is excellent amazing choices so delicious we go to several locations love it all
$10–20Atmosphere: 5Varies by time / dayQuiet, easy to talkNo wait
SkinnyDavid123
SkinnyDavid123 -Google user
7 months ago
I want to thank Nina for making my visit so much better! The food is always great, but in the past, I’ve had some visits where another lady was loud and impatient, making me feel unwelcome. Nina changed that with her warm, friendly, and attentive...Read More
Dine inLunch$10–20Atmosphere: 5Avocado & Mango Salad
Jennifer Dill
Jennifer Dill -Google user
7 months ago
I love this little spot. My husband and I have been visiting their various locations for 10+ years. Consistently delicious. We order take out regularly and occasionally dine in. Whenever we dine in, the service is great and the atmosphere is very quiet, clean, and...Read More
Dine inDinner$10–20Atmosphere: 5Pad Thai Noodle Dish, Fresh RollsSomewhat difficult to find parking
R&C
R&C -Google user
Edited 3 months ago
A good local joint for tasty Chinese or Thai food options. Staff are very friendly and service is generally quick, making this an effective work lunch destination. The serving sizes are generous and the prices were reasonable, especially for the lunch specials. I highly recommend...Read More
Lunch$10–20Atmosphere: 3Moderate noiseNo wait
A H
A H -Google user
a year ago
This is our favorite Thai restaurant. It's a nice sit-down place for family gatherings, but honestly pricing is so reasonable that it's even a great place for quick lunches, pick upd or deliveries. Food arrives superfast. Staff has always been super friendly, and great with...Read More
Dine inLunchAtmosphere: 5Soup, Green Curry, Pad Thai Noodle DishHighly recommendSomewhat difficult to find parkingFree parking lot
Ruth Steering
Ruth Steering -Google user
a month ago
Delivery is very quick, food is hot and perfectly cooked!
$10–20Service: 52 people
Parcel Plus
Parcel Plus -Google user
6 months ago
Great place to dine in if you are looking for authentic thai food. Highly recommend drunken noodles and thom kha soup.
Dine inDinner$20–30Atmosphere: 5Green Curry
Dylan Dai
Dylan Dai -Google user
7 months ago
The best Thai food in Orange County or even California! This has been our go to spot for a while and will keep coming back. Authentic and affordable
Dine inLunch$10–20Atmosphere: 5Pad Thai Noodle DishHighly recommend
V LaV
V LaV -Google user
7 months ago
This place is delicious! Casual atmosphere and friendly staff. Lots of GF options! Great spot for lunch.
Atmosphere: 5Reservations not required
Steve Wayne
Steve Wayne -Google user
10 months ago
Best Thai food around. Always consistently delicious. Pad Thai Avocado Mango salad Pineapple rice These three are our favorites. Yum!!
Food: 5
Juan Pablo Naranjo
Juan Pablo Naranjo -Google user
2 years ago
This place has great food and the restaurant is decent looking. It looks clean and organized but it is not anything extraordinary when it comes to ambient. The food however is amazing!!! To me that’s what really counts. People emphasize way too much in service...Read More
Atmosphere: 4
Darya A.
Darya A. -Google user
2 weeks ago
The best tom kha and tom yum soup in OC!
Dine inDinner$10–20Atmosphere: 5
Ron Prosky
Ron Prosky -Google user
7 months ago
So far, this is probably the best Chinese food I've had in Orange County. The Pad Thai is also excellent.
Matthew Koundakjian
Matthew Koundakjian -Google user
3 years ago
Tom Kha hot pot is always so tasty and satisfying. The satay was perfect. The veggie delight was nicely seasoned and great. The yellow curry had a touch of heat and was smooth and delicious. The staff is always friendly and when my...Read More
Rich R
Rich R -Google user
4 years ago
Very happy with my take-out experience tonight. Had to review. First of all they had real angel wings. Thai restaurants seem to be going away from offering these because they take time to prepare. And they were big and very tasty. Pad...Read More
Edwin Pentz
Edwin Pentz -Google user
3 years ago
Menu is half Chinese and on the flip side, Thai. Friendly staff, ut you better be ready when she comes to take your order! I had Phad Thai and it was delicious. My wife had almond chicken and she said it was excellent. Prices...Read More
Deonette Staggs
Deonette Staggs -Google user
Edited 3 years ago
Ordered the ginger mushroom trio with tofu and jasmine rice and egg rolls. This was ridiculously good and the togo packing job was excellent. I don't have a single complaint... not too greasy, flavorful, fresh veggies, and even the chicken …
ariel awr
ariel awr -Google user
6 years ago
I live about 30miles away from Diho Siam. It is definitely worth the drive because I always have a wonderful experience. I have had multiple visits and every single time I go, the employees always seem to know some of the customers. It's a …
Cristhian Steinsund
Cristhian Steinsund -Google user
a year ago
My family and I have been coming here for over 15 years. It's our favorite spot. The food and the service are excellent and worth the drive from the inland empire.
Brandon S
Brandon S -Google user
Edited 6 years ago
Lots of good Thai place in this neighborhood... This one should be towards the top of your list. …

Features

Service options

check icon Outdoor seating
check icon Delivery
check icon Takeout
check icon Dine-in

Highlights

check icon Fast service
check icon Great tea selection

Popular for

check icon Lunch
check icon Dinner
check icon Solo dining

Accessibility

check icon Wheelchair accessible entrance
check icon Wheelchair accessible parking lot
check icon Wheelchair accessible restroom
check icon Wheelchair accessible seating

Offerings

check icon Alcohol
check icon Beer
check icon Coffee
check icon Comfort food
check icon Healthy options
check icon Quick bite
check icon Small plates
check icon Vegetarian options

Dining options

check icon Lunch
check icon Dinner
check icon Dessert
check icon Seating

Amenities

check icon Restroom

Atmosphere

check icon Casual
check icon Cozy

Crowd

check icon Groups

Planning

check icon Accepts reservations

Payments

check icon Credit cards
check icon Debit cards
check icon NFC mobile payments

Children

check icon Good for kids
check icon High chairs