Frank W. Haskell (1843 – October 9, 1903) was a member of the United States Army, who fought for the Union in the American Civil War, and was a Civil War Medal of Honor recipient.

Sergeant Major Haskell was awarded the Medal of Honor for heroism on June 1, 1862, at Fair Oaks, Virginia.

He is cited to have "assumed command of a portion of the left wing of his regiment," after all other officers had been killed or disabled.

He then "led it gallantly across a stream and contributed most effectively to the success of the action.

[1] Haskell died on October 9, 1903, in Kalispell, Montana, and was buried at Pine Grove Cemetery in Waterville, Maine.