Akilles "Aki" Eero Johannes Järvinen (19 September 1905 – 7 March 1943) was a Finnish decathlete. He competed at the 1928, 1932 and 1936 Olympics and won two silver medals, in 1928 and 1932; he served as the Finnish flag bearer at all three games. He also won a European silver medal in the 400 m hurdles in 1934.
