Martti Bertil Marttelin (18 June 1897 <unk> 1 March 1940) akanga ari mumhanyi wepamusorosoro kubva kuFinland, uyo akakunda menduru yendarira mumarathon evarume
pamitambo yeOlympic yomuzhizha ya1928. Akaurayiwa muhondo muHondo Yenyika II.