Fetus or foetus refers to a stage in prenatal development.

Fetus or Foetus may also refer to: Fetus (album), a 1972 album by Franco Battiato Foetus (band), Australian musical project of JG Thirlwell Foetus (film), a 1994 Hungarian film Fetus in fetu, a developmental abnormality Campylobacter fetus, a species of bacteria