Gash may refer to:
- Wound, a type of injury
- Colloquial term for the vulva
- British military slang for something that is obtained at no cost or for an item of little value
- Gash (Foetus album), 1995
- Gash (Pram album)
- Gash, Hormozgan, a village in Hormozgan Province, Iran
- Gash, Razavi Khorasan, a village in Razavi Khorasan Province, Iran
- Gash, alternate name of Gush, Razavi Khorasan, a village in Razavi Khorasan Province, Iran
- Gash River or Mareb River, flowing out of northern Ethiopia
- Gash (TV series), a 2003 British series presented by Armando Iannucci
- "The Gash", a song by The Flaming Lips from The Soft Bulletin