Denny's (also known as Denny's Diner on some of the locations' signage) is a full-service pancake house/coffee shop/fast casual family restaurant chain. It operates over 1,600 restaurants in the United States, Puerto Rico, Guam, Canada, Dominican Republic, El Salvador, Curaçao, Costa Rica, Venezuela, Honduras, Japan (transliterated as デニーズ ), Mexico, New Zealand, Qatar, and the United Arab Emirates.

Denny may refer to:

• Denny (given name)
• Denny (surname)