Chop suey ("mixed pieces") is an American-Chinese dish consisting of meats (often chicken, fish, beef, shrimp or pork), cooked quickly with vegetables such as bean sprouts, cabbage, and celery and bound in a starch-thickened sauce. It is typically served with rice but can become the Chinese-American form of chow mein with the addition of stir-fried noodles.

Chop suey may be prepared in a variety of styles, such as chicken, beef, pork, king prawn, plain and special. Plain, or vegetable chop suey, is often one of the few traditional Chinese American take-out dishes offered without meat at many restaurants.
Chop suey is widely believed to have been invented in America by Chinese immigrants, but in fact comes from Taishan, a district of Guangdong Province which was the home of most of the early Chinese immigrants; the Hong Kong doctor Li Shu-fan reported that he knew it in Taishan in the 1890s.