Lloyd Martin Seibert (May 23, 1889–October 15, 1972) was a Medal of Honor recipient who was awarded the decoration for his valor in the United States Army during World War I. Seibert first enlisted in the California National Guard's 7th Infantry in January 1906. After WWI, he continued to serve on active duty in the U.S. Army. On 26 August 1937, Master Sergeant Seibert was appointed to the rank of Warrant Officer while assigned to the 1st Cavalry (Mechanized) at Fort Knox, Kentucky. He would later rise to the rank of Chief Warrant Officer - the rank he held upon retirement from the U.S. Army. Seibert is buried at San Francisco National Cemetery.