• Cartoon, abbreviated, from which the primary meaning is derived
• Avatar (computing), referring to the cartoon image of a player's digital avatar in MMORPGs
• Platoon, A military unit.
• Newcastle, for "town" in the English Geordie dialect
• Newcastle United F.C., a local football team also nicknamed "The Toon"

Toon may also refer to:

• Toon (role-playing game), a role-playing game published by Steve Jackson Games in which the players take the parts of cartoon characters
• Toontown Online, an online computer role-playing game.
• Tōon, Ehime, a Japanese city in Ehime Prefecture
• Toon, the former name of Ferdows, a city in South Khorasan Province, Iran.
• Toon, a tree in the genus Toona