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 (born 1927), African-American playwright and editor
• Billy Branch (born 1951), American harmonicist
• The Ambassador (rapper) (William Branch), Christian hip hop artist

• Leslie A White
• Leslie Banks
• Leslie Bassett
• Leslie Berlin
• Leslie Bevis
• Leslie Bibb
• Leslie Blackwell
• Leslie Bovee
• Leslie Bovée
• Leslie Bricusse
• Leslie Burgin
• Leslie Burton
• Leslie Byrne
• Leslie C. Arends
• Leslie Caron
• Leslie Carter
• Leslie Charles
• Leslie Charleson
• Leslie Charteris
• Leslie Cheung
• Leslie Cheung Kwok Wing
• Leslie Claire Margaret Caron
• Leslie Cliff (swimmer)
• Leslie Cochran
• Leslie Compton