William Cayley may refer to:

Sir William Cayley, 1st Baronet (1610–1681) of the Cayley baronets Sir William Cayley, 2nd Baronet (1635–c. 1708) of the Cayley baronets William Cayley (MP) (died 1768), MP for Dover William Cayley (Royal Navy officer) (1742–1801) William Cayley (Canadian politician) (1807–1890), Canadian politician and lawyer

See also

Cayley (disambiguation) William Calley William Cawley (disambiguation)