William, Willie, Bill or Billy McColl or MacColl may refer to:
Bill McColl (1930–2023), American football player and politician Billy McColl (footballer), 1970s footballer (Clydebank F.C.) Billy McColl (actor) (1951–2014), Scottish actor William McColl (clarinetist) (1933–2024), American clarinetist William McColl (footballer) (1865–1903), Scottish 1890s footballer