• Gig (musical performance), live performance by a musician or other performer
• Temporary work, by extension
• Gig, a trident or three pronged spear
• Gigging, the practice of hunting flounder or frogs with a gig
• Captain's gig, a boat used on naval ships as the Captain's taxi
• Cornish pilot gig, a six-oared rowing boat, built of Cornish narrow leaf elm, 32 feet long with a beam of four feet ten inches
• Gig (carriage), a 2-wheeled sprung cart to be pulled by a horse
• Gigabyte
• Gig - The blade a professional wrestler uses to cut himself.
• Gig Mark - A scar from Blading.
• Gig, a character in the video game Soul Nomad & the World Eaters

GIG may refer to:

• Gay International Group (Geneva, Switzerland), a Geneva-based group for gay expatriates or tourists
• GIG (Hot Wheels AcceleRacers), a character in Hot Wheels AcceleRacers
• Giggleswick railway station (National Rail station code: GIG) in England
• Rio de Janeiro-Galeão International Airport (IATA airport code: GIG)
• Gwasanaeth Iechyd Gwladol the National Health Service of Wales.
• Global Information Grid, a military global information network operated by the United States Department of Defense.
• Generalized inverse Gaussian distribution, a distribution in probability theory