Mariia Posa (born 21 February 1988, in Helsinki) is a Finnish retired ice hockey defenceman. She played for several years as a member of the Finnish national team and also played for the University of Minnesota Duluth.
In her freshman year with the University of Minnesota Duluth, Posa helped the Bulldogs qualify for the 2010 NCAA National Collegiate Women's Ice Hockey Tournament and win the NCAA championship.
She was named to the 2010âÂÂ11 All-WCHA Academic Team and 2011âÂÂ12 All-WCHA Academic Team.
After graduating, Posa joined the Espoon Blues. She helped lead the Blues to the back-to-back Finnish Ice Hockey Championships in 2013 and 2014.