William Hayley Mason (18 April 1811 – 24 January 1865) was an English cricketer.
Mason made his first-class debut for Sussex against England in 1834 at the Royal New Ground, Brighton.
Mason made five first-class appearances for Sussex prior to the formation of Sussex County Cricket Club in August 1839.
[1] Mason first appeared for Sussex County Cricket Club against Kent in 1841, with him making four further first-class appearances for the County Cricket Club, with his final appearance coming against Kent.
[1] In total, Mason played eleven first-class matches for Sussex, before and after the formation of the county club, scoring 127 runs at an average of 6.04, with a high score of 38.