William Horsley (6 June 1835 – 29 August 1864) was an English cricketer. Horsley's batting style is unknown. He was born at Southwell, Nottinghamshire.
Horsley made two first-class appearances for Nottinghamshire in 1862, against Cambridgeshire at Fenner's and Surrey at The Oval. He scored 31 runs in his two matches, with a high score of 16.
He died at the town of his birth on 29 August 1864.