William P. Wood

William P. Wood
Sketch of Wood in 1911 publication
1st Chief of the United States Secret Service
In office July 5, 1865 – 1869
President	Andrew Johnson
Preceded by	Office established
Succeeded by	Hiram C. Whitley
Personal details
Born	(1820-03-11)March 11, 1820 Alexandria, Virginia, U.S.
Died	March 20, 1903(1903-03-20) (aged 83) Washington, D.C., U.S.
Resting place	Congressional Cemetery Washington, D.C., U.S.
Political party	Whig Know-Nothing Party
Spouse	Harriet Elizabeth Smith ​ ​ (m. 1849; died 1899)​
Children	6
Occupation	Soldier lawyer investigator
Military service
Branch/service	United States Army
Years of service	1847–1848
Unit	3rd Regular Cavalry
Battles/wars	Mexican–American War American Civil War

William P. Wood (March 11, 1820 – March 20, 1903) was a soldier in the United States Army during the Mexican–American War. He was the first chief of the United States Secret Service.