Lars Thorbjørn Monsen (born 21 April 1963) is a Norwegian adventurer and journalist, famous for his explorations and backpacking expeditions in harsh wilderness.
In particular, he became especially known for his thru-hiking trip in northern Canada, which was filmed and documented by Monsen himself, and then broadcast on NRK in 2005.
He spent 2 years and 7 months on this trip alone.
He is of Sami descent.In 2010 Monsen was expedition leader for the Norwegian program "Ingen Grenser" which is a remake of BBC's Beyond Boundaries.
In 30 days they covered 500 kilometers over Cap of the North, some of the participants with severe physical limitations.
He is married to American-Norwegian artist Trine Rein.Monsen is a skilled chess player with a FIDE rating of 1877 as of November 2016.