Poster Boy might refer to:

• Poster Boy (street artist), the pseudonym of a famous graffiti artist active in New York City
• Poster Boy (film), a 2004, gay-themed film

• Sis Paulsen
• Sispony
• Sispre
• Si Spurrier
• Sisputa
• Sisquoc
• Sisquoc, CA
• Sisquoc Formation
• Sis River
• Sissach (district)
• Sissa, Italy
• Sissala East (Ghana parliament constituency)
• Sissala West (Ghana parliament constituency)
• Sissa River
• Sissedougou
• Sissela
• Sissela Ann Myrdal
• Sissela Kyle
• Sissel Brenne
• Sissel Buchholdt
• Sissel discography
• Sissel (Ghost Trick)
• Sissel Kyrkjebo discography
• Sissel Kyrkjeboe
• Sissel Kyrkjebø discography