Taenia or tænia, from Greek () and Latin (both meaning 'tape' or 'ribbon') may refer to:
Anatomy Taenia coli, three separate longitudinal ribbons of smooth muscle of the large intestine Taenia thalami, a superior surface of the thalamus of the mammal brain Taenia of fourth ventricle, two narrow bands of white matter of the mammal brain
Zoology Taenia (flatworm), a tapeworm genus Cepola or Taenia, a bandfish genus Tinea (moth) or Taenia, a fungus moth genus Taenia, a Scarabaeidae genus
Other uses Taenia (architecture), a small fillet molding near the top of the architrave in a Doric column Tainia (costume) or Taenia, a ribbon worn in the hair in ancient Greece
See also Ribbon