Shag may refer to:
- Collegiate shag, a swing dance that originated in the 1920s (popular in the 1930s and 40s)
- Carolina shag, a swing dance that originated in South Carolina in the 1940s and still is their state dance
- St. Louis shag, a swing dance that evolved from the Charleston
- Shag (1989 film)
- Shag (fabric), a fabric typically used to make deep-pile carpets
- Shag or Cormorant, a bird family
- European Shag, a specific species of the shag or cormorant family
- The Shag, also known as The Shags (one of many bands of that name) or Shag, a 1960s garage and psychedelic rock band from Milwaukee
- Shag, a name used on some pop records in the early 1970s by British record producer Jonathan King
- Shag (tobacco), fine-cut tobacco
- Shag (hairstyle)
- Shag (Josh Agle), American artist
- Shag, also known as a Stag and doe
- British slang for sexual intercourse - see Wiktionary definition
- Shagging (baseball), to catch fly balls in baseball outside of a game