William Mellor

William Mellor could refer to:

• Bill Mellor (1874–1940), American baseball player
• Bill Mellor (footballer), (1886–1938), English football goalkeeper
• Chip Mellor (full name William H. Mellor) (1950-2024), American lawyer and political activist
• Will Mellor (born 1976), (British actor)
• William Mellor (journalist) (1888–1942), British journalist and left-wing political activist
• William Mellor (footballer), English footballer
• William C. Mellor (1903–1963), American cinematographer
• William Frederick Mellor, English missionary