Ginn or GINN may refer to:
- Ginn, supernatural beings in Arab folklore and Islamic teachings.
- Ginn, a recurring character appearing in the television series Stargate Universe.
- GINN, a fictional, mechanical exoskeleton weapon suit, worn in the Mobile Suit Gundam SEED anime television series.
- Ginn, a daemon program for Linux that gives applications the ability to support a subset of multi-touch gestures on touch-sensitive displays.
- Ginn & Co Solicitors, a Cambridge-based law firm, which was established in 1873 by Samuel Reuben Ginn
- Ginn and Company, UK publisher, part of the Penguin Group
- Ginn Publishing Canada
- Bob Ginn, the owner of Ginn Clubs and Resorts real estate company and owner of the NASCAR Nextel Cup team Ginn Racing.
- Greg Ginn, American guitarist, formerly of hardcore punk band Black Flag.
- Samuel Ginn, a pioneer in wireless communications and namesake of the Samuel Ginn College of Engineering at Auburn University.
- Ted Ginn, Jr., an American football wide receiver who currently plays for the San Francisco 49ers of the National Football League.