David Butts Harmony (September 2, 1832 – November 2, 1917) was a rear admiral of the United States Navy, who served during the American Civil War.

David Butts Harmony
David B. Harmony
Born	(1832-09-02)September 2, 1832 Easton, Pennsylvania, US
Died	November 2, 1917(1917-11-02) (aged 85)
Place of burial	Arlington National Cemetery
Allegiance	United States of America
Service/branch	United States Navy
Years of service	1847–1893
Rank	Rear admiral
Commands held	USS Sebago USS Frolic USS Portsmouth USS Kearsarge USS Plymouth USS Powhatan USS Tennessee USS Colorado
Battles/wars	American Civil War

Harmony was born in Easton, Pennsylvania, and entered the navy as a midshipman on April 7, 1847, was promoted to passed midshipman on June 10, 1852, became lieutenant in 1855, and lieutenant commander in 1862.

Promoted to commander in 1866, Harmony then served at the New York Navy Yard, and then in 1867–69 commanded the Frolic in the European Squadron, one of the vessels of Admiral Farragut's squadron.

Harmony returned to the New York Navy Yard in 1869–72, was promoted to captain in 1875, and commanded the sloops Portsmouth, Kearsarge and Plymouth, and the frigates Powhatan, Tennessee and Colorado, between 1878 and 1883.

Harmony was a member of Navy Department's Examining and Retiring Boards 1883–84, was promoted to commodore in 1885, and served as Chief of the Bureau of Yards and Docks, 1885–89, and was Chairman of the Lighthouse Board, 1889–91. He retired on June 26, 1893.

Harmony died on November 2, 1917, and was buried in Section 2 of Arlington National Cemetery.^[1]

Some of his letters from the 1870s, written while on active duty, are archived at the National Archives and Records Administration in Washington, D.C.