Tomcat may refer to:
Animals
Science and technology
- Apache Tomcat, an open-source Java Servlet Container developed by the Apache Software Foundation
- Beretta 3032 Tomcat, a small .32 caliber pistol
- Bowler Tomcat, an off-road vehicle
- Grumman F-14 Tomcat, a military jet fighter used by the United States Navy from 1974 to 2006
- TOMCAT/SLIMCAT, a chemical transport model
- Waspair HM 81 Tomcat, ultralight aircraft
Media
- Tom Cat, a character from the animated series Tom and Jerry
- Tom Cat (album), a 1981 album by Lee Morgan
- Tom Cat (band), a Japanese band who contributed to the Fist of the North Star soundtrack
- Tomcat (comics), DC Comics character, son of Wildcat
- Tomcat (game), an Atari color vector game created in 1983
- Tomcat (video game), a 1989 computer game published in the UK by Players Software
- Tomcats (1977 film), a 1977 rape-and-revenge film
- Tomcats (2001 film), a 2001 comedy film
- The Tomcats, Brian Setzer's first rockabilly music group
- TomKat, a portmanteau for celebrity couple Tom Cruise & Katie Holmes
- Tomcat (2016 film), a 2016 Austrian film