Why Not may refer to:
Film and TV 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
Music Albums 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
Songs "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
Other uses 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 David Munyua, Kenyan darts player nicknamed "Why Not?"
See also Whynot (disambiguation)