William Barnett (dates of birth and death unknown) was an English cricketer who active in first-class cricket in the 1830s.
Barnett made his first-class debut for The Bs against Marylebone Cricket Club (MCC) at Lord's, before playing four first-class matches for MCC in 1837 and 1838.
[1] In his five first-class matches, Barnett scored 43 runs with a high-score of 14.
[2] Barnett's batting style is unknown.