William Branch

William Branch may refer to:
 * William Branch Giles (1762–1830), American statesman, senator and governor of Virginia
 * William A. B. Branch (1847–1910), American politician and US representative from North Carolina
 * William B. Branch (1927–2019), African-American playwright and editor
 * William Roy Branch (1946–2018), British/South-African herpetologist
 * Billy Branch (born 1951), American harmonicist
 * The Ambassador (rapper) (William Branch), Christian hip hop artist