Aaro Olavi Pajari (17 July 1897 – 14 October 1949) was a Major General in the Finnish Army. During World War II, he became one of the four double recipients of the Mannerheim Cross 2nd Class. His greatest achievement was the Finnish victory at the Battle of Tolvajärvi in the Winter War, where his small Finnish force smashed a far larger Soviet army. Pajari went on to serve brilliantly throughout the Winter, Continuation, and Lapland wars, becoming famous for his success in leading small unit, and guerrilla style operations.