Basilius Suosaari (born Vasili Tichanoff, 4 April 1861 - 4 July 1939) was a Finnish-Australian politician and farmer.

[1] Suosaari was born to a poor peasant family in Karelia, next to the Russian border.

He was also active in a local utopian socialist community founded by the followers of Matti Kurikka.

[3] Basilius Suosaari was married to Anna Brita Nupponen (1869-1958) with 11 children.

Their son Axel Suosaari (1908-1934) was a talented swimmer who was the Australian Champion of 100 yards freestyle swimming in 1930-1931.