Clifford Chester Sims (June 18, 1942 – February 21, 1968) was a United States Army soldier and a recipient of America's highest military decoration—the Medal of Honor—for his actions in the Vietnam War.

[1] He met his later wife, Mary, at George Washington High School and joined the Army from Jacksonville, Florida shortly after graduation.

On that day, during an engagement with enemy forces near Huế in the Republic of Vietnam, Sims threw himself onto a triggered booby-trap device.

Then on moving toward a bunker a booby trap was set off, and Sgt Sims yelled for everybody to get back, but before they could he threw himself on the device taking the entire blast to save his squad from complete disaster.

Entered service at: Jacksonville, Fla. Born: June 18, 1942, Port St. Joe, Fla.[4] Citation: For conspicuous gallantry and intrepidity in action at the risk of his life above and beyond the call of duty.

Sims was then ordered to move his squad to a position where he could provide covering fire for the company command group and to link up with the 3rd Platoon, which was under heavy enemy pressure.

Sims and his squad were approaching a bunker when they heard the unmistakable noise of a concealed booby trap being triggered immediately to their front.

Sims' extraordinary heroism at the cost of his life is in keeping with the highest traditions of the military service and reflects great credit upon himself and the U.S. Army.