Daniel Fletcher Webster (July 25, 1813 – August 30, 1862) was an American diplomat and Union Army officer.

They raised two sons, Daniel (April 1840 – 2 September 1865) and Ashburton (7 December 1847 – 7 February 1879), and four daughters but three died in childhood.

His third daughter Caroline W. Webster (24 October 1845 – 16 August 1884) married James Geddes Day.

While reinforcing Union forces attempting to repel Longstreet's counterattack, Webster was mortally wounded on Chinn Ridge in defense of Henry House Hill in the Second Battle of Bull Run on August 30, 1862.

A memorial boulder stands in Manassas National Battlefield Park in Colonel Webster's honor.