Marttinen is a Finnish surname. Notable people with the surname include: Aati Marttinen (born 1997), Finnish footballer. Alpo K. Marttinen (1908–1975), Finnish colonel. Erkki Marttinen (1926–2004), Finnish swimmer. Jyri Marttinen (born 1982), Finnish ice hockey player. Matias Marttinen, Finnish politician. Tauno Marttinen (1912–2008), Finnish composer https://en.wikipedia.org/wiki/Marttinen