Martti Johannes Aho (19 March 1896 in Keminmaa – 21 June 1968 in Kokkola) was a Finnish Colonel. He is one of the four double recipients of the Mannerheim Cross 2nd Class. Martti Aho participated in the Finnish Civil War in 1918 and in the Aunus expedition 1919–1920. He served in the Border Guard as a company commander before the Winter War and during the war he was first a company commander, and later the commander of Erillinen pataljoona 8 (ErP 8; Detached Battalion 8). Aho was wounded twice during the Winter War.