Robert Horn

Robert Horn (or variants) may refer to:


 * Robert Horn (water polo) (1931–2019), American water polo player
 * Robert Horn (writer), American playwright and screenwriter
 * Robert E. Horn (born 1933), American political scientist and professor
 * Robbie Horn (born 1977), Scottish footballer
 * Bob Horn (broadcaster) (1916–1966), radio and TV presenter
 * Bob Horn (American football) (born 1954), National Football League linebacker