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Koisan Japanese Cuisine

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1132 E Katella Ave, Ste A11, Orange, CA 92867-5044
+1 714-639-2330
11:30 - 21:30
Open now
See all hours
Sun 16:00 - 21:00
Mon - Sat 11:30 - 21:30
More Info
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15 Reviews from our TripAdvisor Community

Traveller rating
Traveller type
Time of year
Showing 14: English reviews
Tustin, California
1 review
Reviewed 1 week ago NEW via mobile

The Asian waitress with the blonde hair was very rude when we asked for more wasabi and slammed the wasabi down and never came back to check on us. We had to give the cashier the money for the bill.

Thank marrrrrA
Henderson, Nevada
Level Contributor
190 reviews
97 restaurant reviews
common_n_restaurant_reviews_1bd8 64 helpful votes
Reviewed 13 October 2014

I am not a big fan of Sushi but my husband and family really enjoy it. While visiting CA, we were looking for a good sushi place with something to keep me happy too. My husband loved the Sushi. He said that each dish had a unique flavor. He used very little wasabi and soy sauce. I was equally happy... More 

Thank BrooklynDodgers13
Level Contributor
319 reviews
253 restaurant reviews
common_n_restaurant_reviews_1bd8 153 helpful votes
Reviewed 26 January 2014

We visited during a local convention. While nothing was terribly wrong, just keep driving down the road to Shiki for far better fare. The owner was very accommodating but the food was unfortunately 'just OK'. It is off our list for the future . . .

Thank imcarthur
1 review
common_n_restaurant_reviews_1bd8 1 helpful vote
Reviewed 15 December 2013

My boyfriends family has been coming for over 30 years and they have totally converted me to this place. Great food and service!

1 Thank Jennifer765
2 reviews
common_n_restaurant_reviews_1bd8 1 helpful vote
Reviewed 28 March 2013

Visiting from Canada and decided to try this place. I hope this is not the best Japanese restaurant that this area has to offer. The food was fair at best and quite expensive for what you get. The interior seemed like something from 30 years ago and certainly the seats we were sitting in were at least that old. The... More 

1 Thank Satviewer2000
Tustin, CA
1 review
common_n_restaurant_reviews_1bd8 1 helpful vote
Reviewed 20 December 2012

I recently had dinner there with an eclectic group that included asians. What makes this place distinctive in not just the quality of the food (freshness, flavor, presentation) but the many creative expressions based on japanese cuisine that you can't get anywhere else. Of course, the menu contains traditional favorites but only at Koisan can you get the lettuce wrapped... More 

1 Thank Gary L
Trabuco Canyon, California
Level Contributor
65 reviews
15 restaurant reviews
common_n_restaurant_reviews_1bd8 37 helpful votes
Reviewed 6 December 2012

Good News, Koi-San is Open again!!!! The new Owners are excited to announce the reopening of a popular Japanese Restaurant in the City of Orange, both the Sushi Chef and the Kitchen Chef have returned and the Inside has been cleaned up and looks fantastic, The food was Fresh and the servers delightful, I highly recommend coming and trying the... More 

2 Thank ca1Robert
Level Contributor
762 reviews
596 restaurant reviews
common_n_restaurant_reviews_1bd8 257 helpful votes
Reviewed 22 March 2012

This is really the best Japanese restaurant that I have ever encountered. I eat sushi everytime that I am in CA and all over the country, but this is THE best. I went for lunch and the sales rep who I was working with (a local Orange,CA gal who has a hubby that frequents Koisan) got us reservations on a... More 

2 Thank JoInTexas
Level Contributor
106 reviews
80 restaurant reviews
common_n_restaurant_reviews_1bd8 41 helpful votes
Reviewed 16 June 2011

Love this place, been going for over 20 years. Very authentic Japanese Food! Love the owner Sam and his nephew Leo! Can be very busy but worth the wait.

2 Thank my_red_dress
Santa Clara, California
Level Contributor
8 reviews
8 restaurant reviews
common_n_restaurant_reviews_1bd8 2 helpful votes
Reviewed 11 January 2011

This is a hidden gem in a strip mall with a plain entrance and, once inside, it's a lovely oasis of calm. The food is amazing and our server, Lisa, was helpful and fun. We enjoyed our meal enormously and can't wait to return.

Thank FlorenceH13

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Restaurant Details

Rating summary
  • Food
    4.5 of 5 bubbles
    4 of 5 bubbles
  • Value
    4 of 5 bubbles
    4 of 5 bubbles
Japanese, Sushi, Asian
Lunch, Dinner
Restaurant features
Seating, Waitstaff, Reservations
Open Hours
16:00 - 21:00
11:30 - 21:30
11:30 - 21:30
11:30 - 21:30
11:30 - 21:30
11:30 - 21:30
11:30 - 21:30
Location and Contact Information
  • Address: 1132 E Katella Ave, Ste A11, Orange, CA 92867-5044
  • Location: United States  >  California (CA)  >  Orange County  >  Orange
  • Phone Number: +1 714-639-2330
Koisan Sushi Bar has reopened and the new owners have added a flare to the traditional Japanese restaurant. Enjoy our chef’s own inspired specials at the sushi bar, in a cozy booth, or our room for private parties. Come by and experience the unique ambiance, special sushi creations, and our very own secret sauce.\Hours:Tues-Fri 11:30-2:00 PMTues-Sat 5:30-9:30 PM

Questions & Answers

Here's what previous visitors have asked, with answers from representatives of Koisan Japanese Cuisine and other visitors
1 question
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Questions? Get answers from Koisan Japanese Cuisine staff and past visitors.
Posting guidelines
Typical questions asked:
  • Do you have gluten-free options?
  • Is there a dress code?
  • Do you allow dogs on the outdoor patio?