Guinea pig (disambiguation)

A guinea pig is a domestic rodent.

Guinea pig may also refer to:
 * Guinea pig, a colloquial term for a test subject of any species:
 * Human subject research
 * Animal testing
 * The Guinea Pig Club, a group of surgical patients
 * 100,000,000 Guinea Pigs, a 1933 book about the pharmaceutical and food industries
 * Guinea Pig (film series), a controversial series of Japanese films
 * Guinea Pig (TV series), a Discovery Channel series
 * The Guinea Pig (film), a 1948 film starring Richard Attenborough
 * The Guinea Pig (play), a 1929 comedy by Preston Sturges
 * The Guinea Pig EP, the first album released by the band Angry Salad