Mona Løseth (born 11 April 1991) is a Norwegian alpine skier. She was giant slalom Junior World Champion in 2010. Her elder sisters Lene and Nina are also alpine skiers at international level. In a World Cup competition in slalom in Flachau in January 2010 all three sisters qualified for the final.
She represented Norway at the 2010 and 2014 Winter Olympics.