Dann may refer to:
- Dann, the surname
- dANN, the artificial intelligence software library
Dann as a surname may refer to:
- Mary Dann and Carrie Dann, Native American activists
- Colin Dann, a British author
- Jack Dann, a American writer
- Lance Dann, a British sound and radio artist
- Laurie Dann, an American murderer
- Marc Dann, an American politician
- Patty Dann, an American author
- Scott Dann, an English footballer
- Trevor Dann, a British writer and broadcaster
- Wimm Bill Dann, a Russian food producer
- Michael Dann, a former TV executive