William Wister McKean (19 September 1800 – 22 April 1865) was an admiral in the United States Navy during the American Civil War. He was noted for his service in the Union blockade that effectively closed Confederate seaports in the Gulf of Mexico.

Early life

William Wister McKean was born on 19 September 1800 in Huntingdon County, Pennsylvania, to Giles McKean, a state legislator. He was the grandson of Thomas McKean, the governor of that state. He was relieved from active duty on 4 June 1862.