Rowdies may refer to:
- Hooligans - a term commonly applied to fans of sports team who engage in unruly and destructive behaviour.
- Tampa Bay Rowdies - an minor league association football club from the United States
- Tampa Bay Rowdies (1975-1993) - a defunct association football club from the United States.
- Rowdies Rugby Football Club - a rugby club in the Missouri Rugby Union founded in 1978.