Diane (given name)
- Notable people named Diane
Alternative spellings include Dianne, Dian, Diahann, Dyan and Dyane. See also Di and Diana
- Diane Abbott, a British politician
- Diane Cummins, a Canadian middle distance runner
- Diane de France, a 16th-century daughter of France's Henry II
- Diane Franklin, an American actress
- Dyan Cannon, an American actress
- Diahann Carroll, an American actress and singer
- Diane Gerace, a Canadian high jumper
- Diane Guthrie-Gresham, a Jamaican long jumper and heptathlete
- Diane Keaton, an American actress
- Diane Ladd, an American actress
- Diane Lane, an American actress
- Diane Modahl, an English athlete
- Diane Murphy, an American actress
- Diane Neal, an American actress
- Diane Nelson (comics), an American business executive
- Diane de Poitiers, a 16th-century French noblewoman
- Diane Ratnik, Canadian volleyball player
- Diane Sawyer, American TV presenter
- Diane Tell
- Diane Warren, an American songwriter
- Other
- Dian Fossey, an American zoologist
- Moshe Dayan, Israeli politician and military leader
- Fictional characters named Diane
- Diane Court, a fictional character in the 1989 Cameron Crowe film Say Anything..., played by Ione Skye
- Diane Chambers, a fictional character in the TV series Cheers
- Diane Darcy, a fictional race car driver in Herbie Goes to Monte Carlo
- Diane, an unseen character from the 2008 video game No More Heroes
- Diane, an unseen character in the television show Twin Peaks, to whom Dale Cooper addresses messages on a pocket tape recorder
- Diane Jenkins Newman, a character on the American soap opera The Young and the Restless