O Ya is a Japanese omakase-style restaurant in Boston, Massachusetts. The restaurant is owned by Tim and Nancy Cushman.
There have been O Ya outposts on the east side of Manhattan and in Mexico City. The Boston location opened in 2007. The New York City location closed permanently in 2020.
The menu has included sushi, sashimi, nigiri, and small plates.
In 2022, O Ya was named Best Japanese Restaurant in Boston magazine's Best of Boston list.