Stag can mean:

• A deer
• An animal castrated after maturity, especially cattle.
• Stag (album), a 1996 album by The Melvins
• For the term stag film, see pornographic movie.
• The Triumph Stag automobile
• An all American Firearms Manufacturer - Stag Arms
• The Society for the Transmundane And Gifted (STAG), a small-scale parapsychology organization.
• The Stag poem by Ted Hughes
• Stag is a men's magazine
• An event for men only
• Someone who buys newly issued shares.
• San Sebastian Stags of San Sebastian College - Recoletos of Manila