A runt is a smaller specimen in a group of animals, usually of offspring in a litter.
Runt(s) may also refer to:
- Runt (album), a 1970 album by Todd Rundgren, originally credited to the band Runt
- Runt. The Ballad of Todd Rundgren, a 1971 album by Todd Rundgren
- Runt (novel), a novel by Marion Dane Bauer
- Runt (film), a 2020 American thriller film
- RUNT Linux, ResNet USB Network Tester, a Linux distro
- Runts, a brand of candy
- Brother Runt or simply Runt, ringname of Matt Hyson (Spike Dudley), American professional wrestler
- C. W. Bishop (1890–1971), nicknamed "Runt", U.S. Congressman from Illinois
- Runt Wolfe (1902–1972), nickname of Moe Berg, Major League Baseball Player, and spy
- Runt domain, an evolutionary conserved protein domain
- Runt frame, an Ethernet frame shorter than the minimum of 64 bytes
- The "Runt" device, a prototype hydrogen bomb detonated in the Castle Romeo test
- Runt pulse, a narrow pulse that does not reach a valid high or low level
- Runt Distribution, a US record company
- Runt Marr (1891–1981), baseball figure
Characters
- Runt, of the duo Rita and Runt, in the TV series Animaniacs
- Runt, a character in the video game Simon the Sorcerer II: The Lion, the Wizard and the Wardrobe
- Runt, a character in the film Disco Pigs
- Runts, characters in the video game Quadrun
- The Runts, a gang in the film City of God
- Runt, a character from Disney's Chicken Little