Patrick Henry Sherrill (November 13, 1941 - August 20, 1986) was a United States Postal Service employee who, on August 20, 1986 in Edmond, Oklahoma, shot and killed 14 employees with two .45 caliber pistols at his work place before turning one of the guns on himself and committing suicide. Six other employees were wounded.

The incident is credited with inspiring the American phrase "going postal".