Lemuel Mathewson (March 29, 1899 – February 26, 1970) was a United States Army lieutenant general.

[3] In the 1920s and 1930s, Mathewson served in a variety of assignments in the United States and overseas, including graduate student in Madrid, Spain, professor of Spanish at the United States Military Academy, instructor at the Fort Sill, Oklahoma Field Artillery School, and special projects officer in Latin America.

[8][9] Mathewson's awards included the Army Distinguished Service Medal, Legion of Merit with two oak leaf clusters, the Bronze Star Medal[26] and the Order of Alexander Nevsky from the Soviet Union.

He died at Walter Reed Army Hospital on February 26, 1970.

[31] General Mathewson was buried in Section III Site A-24 of the West Point Cemetery.