Marion Perry Maus (August 25, 1850 – February 2, 1930) was a United States Army brigadier general who was a recipient of the Medal of Honor for valor in action on January 11, 1886, in the Sierra Madre Mountains, Mexico.

An 1874 graduate of West Point, he served in three wars and in multiple commands in the Army during his long career, retiring in 1913.

In 1885, as a commander of Apache scouts, he took part in the expedition into Mexico in pursuit of Geronimo and for conduct in that action he received the Medal of Honor.

"[4] Maus served as aide to Gen. Nelson Appleton Miles during the latter's inspection tour to Europe in 1897 and during the Spanish–American War in 1898.

Maus was promoted to major in June 1899 and a month later was made inspector general of the Department of California and Columbia.