A tail is the section at the rear end of an animal's body, a distinct, flexible appendage to the torso.

Tail or tails may also refer to:

Science and technology Tail (books), a part of a book Tails (operating system) or The Amnesic Incognito Live System, a Linux distribution designed for anonymity and privacy Tail (Unix), a Unix program used to display the last few lines of a file Tail, one of the extreme ends of a probability density function Terminal amine isotopic labeling of substrates Poly-A tail, part of a mature mRNA

Entertainment Tails (album), an album by Lisa Loeb Tails (Sonic the Hedgehog), a character in the Sonic the Hedgehog franchise Tail, a character in the Kaiketsu Zorori movie

Other uses Tails, the reverse side of a coin Tailcoat or its rear section, a type of coat/suit used for evening dress Tail, the final batsmen in the batting order for cricket Fee tail or tail, an obsolescent term in common law Jabot (window), a kind of soft window treatment

See also Aircraft tail, the empennage of an aircraft Comet tail, a visible part of a comet Rattail (hairstyle), a hairstyle Tail recursion, a type of recursion in computer programming Tail rotor, a small vertical propeller mounted at the rear of a helicopter Tailing (disambiguation)