Paul Allen (1953–2018) was an American businessman and co-founder of Microsoft.

Paul Allen may also refer to:

• Paul Allen (editor) (1775–1826), American editor and author
• Paul Hastings Allen (1883–1952), American composer
• Paul H. Allen (1911–1963), American botanist
• Paul M. Allen (born 1951), American cellular immunologist
• Paul Allen (footballer) (born 1962), English footballer
• Paul Coy Allen (born 1977), American filmmaker, television director and music video director
• Paul Allen (bassist), bass player for Hal
• Paul Allen (sports commentator) (born 1966), host of The Paul Allen Show on KFXN-FM and radio broadcaster for the Minnesota Vikings
• Paul Allen, co-founder of Ancestry.com
• Paul R. Allen, American mortgage CEO convicted for fraud

• Paul Allen, a character in the 1991 novel American Psycho and the 2000 film adaptation

• 23120 Paulallen a minor planet
• Paul Allen's flower fly

• Paul Allen Simmons (1921–2014), American federal judge
• Allen (surname)
• Allen Paul (disambiguation)