William Knowles Tyldesley (12 August 1887 – 26 April 1918) was an English cricketer active from 1908 to 1914 who played for Lancashire.

He was born in Wigan and died in Kemmel, Belgium, while serving with the British Army in World War I.

[1] He appeared in 87 first-class matches as a lefthanded batsman who bowled left arm medium-fast pace.

[2] William Tyldesley was the eldest of four cricketing brothers who all played for Lancashire: himself, James, Harry and Dick.

This biographical article related to an English cricket person born in the 1880s is a stub.