Granberg is a surname. Notable people with the surname include:

• Carolina Granberg (1818-1884), Swedish ballerina
• Devlin Granberg (born 1995), American baseball player
• Emanuel Granberg (1754–1797), Finnish painter
• Fredde Granberg (born 1970), Swedish actor, playwright and director
• Jeanette Granberg (1825–1857), Swedish writer and playwright
• Joonas Granberg (born 1986), Finnish professional golfer
• Kurt M. Granberg (born 1953), American politician
• Lars U. Granberg (born 1965), Swedish politician
• Louise Granberg (1812–1907), Swedish playwright and theatre director
• Petter Granberg (born 1992), Swedish professional ice hockey player