William Henry Timlin (May 28, 1852 – August 21, 1916) was an American lawyer and judge.

[1] His mother died when he was six, and his father, who volunteered for the Union Army, disappeared during the American Civil War.

Thus Timlin was raised, from age nine, by his uncle, who was a farmer struggling with financial hardship.

[2] Timlin studied law under G. G. Sedgwick, and later H. G. and W. J. Turner, and was admitted to the State Bar of Wisconsin in 1878.

He practiced law in Kewaunee, where he also served as superintendent of the public schools.