Why Not may refer to:

• Why Not? with Shania Twain, an American TV show
• Pourquoi pas! (Why Not!), a 1977 French film starring Sami Frey
• Why Not?, a 2019 short thriller movie directed by Buğra Mert Alkayalar

• Why Not (George Cables album), 1975
• Why Not!, a 1991 album by saxophonist Houston Person
• Why Not? (Michel Camilo album), 1985, or the title song
• Why Not..., a 1978 album by organist Don Patterson
• Why Not? (Marion Brown album), 1968
• Why Not?, a 1973 album by Ellis
• Y Not, a 2010 album by Ringo Starr
• Y Not Festival, an annual music festival in Derbyshire, England
• Why Not, a 2015 album by Blue Sky Riders

• "Why Not?" (song), a 2020 single by girl group Loona
• "Why Not" (song), a 2003 song by Hilary Duff
• "Why Not?", a 1970 song by Gentle Giant from the album Gentle Giant

• Why Not Model Agency, an Italian modeling agency
• Beach Hotel (Sydney), originally Why Not, an historic pub in Sydney, Australia
• The ? operator in linear logic
• "Why Not?", slogan of the 1989 Baltimore Orioles season

• Whynot (disambiguation)

This disambiguation page lists articles associated with the title Why Not.
If an internal link led you here, you may wish to change the link to point directly to the intended article.