Diner is a type of North American restaurant.

Diner may also refer to:

• A diner, a person who dines or eats
• A dining car on a train, a restaurant

• Diner, 1987 video game by INTV Corporation and sequel to BurgerTime
• Diner (pinball), 1990 arcade game

• Diner (1982 film), an American film written and directed by Barry Levinson
• Diner (2019 film), a Japanese film directed by Mika Ninagawa, based on a novel by Yumeaki Hirayama

• Dan Diner (born 1946), an Israeli-German historian and political writer
• Helen Diner (1874–1948), an Austrian writer
• Diners, the stage name of guitar pop musician Blue Broderick

• Andorran diner, commemorative coin of Andorra
• Diners Club, credit card company
• Unscrupulous diner's dilemma, in game theory

• Dinner