Tomcat may refer to:
Animals A sexually mature male cat Paederus, known as in Indonesia
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 (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 and Katie Holmes Tomcat (2016 film), a 2016 Austrian film Talking Tom, a character in Outfit7's Talking Tom and Friends media franchise
Science and technology Apache Tomcat, an implementation of Java web-server technologies Beretta 3032 Tomcat, a pistol Grumman F-14 Tomcat, a fighter aircraft Kawasaki Tomcat ZX-10, a motorcycle Rover 200 Coupé, a car TOMCAT/SLIMCAT, a chemical transport model Waspair HM 81 Tomcat, an ultralight aircraft