William Leslie
William Leslie or Bill Leslie may refer to:
- William Leslie, 3rd Earl of Rothes, Scottish nobleman, briefly Earl of Rothes in 1513, killed at Flodden Field
- William Leslie (theologian), principal of King's College, Aberdeen, leader of the Aberdeen Doctors
- Sir William Leslie, 3rd Baronet, one of the Leslie baronets
- Wilhelm von Leslie, bishop of Laybach
- William Leslie (British Army officer), son of Earl of Leven, killed at the Battle of Princeton
- William Leslie of Nethermuir, architect and Lord Provost of Aberdeen
- William Leslie (MP), Scottish politician and MP for Aberdeenshire
- William Leslie (footballer), Scottish-Argentine footballer of the late 19th century
- William Leslie (rugby league), rugby league player in the New South Wales Rugby League's foundation
- , American jazz musician
- William Leslie (actor), American actor
- Bill Leslie (journalist), American journalist and musician
- Bill Leslie (commentator), British football commentator