Mosjoen Idrettslag is a Norwegian sports club from Mosjoen, Vefsn, Nordland. It has sections for association football, gymnastics and skiing.
Mosjoen Turnforening (gymnastics) was founded in 1892, and this is also regarded as the foundation year of the current club. Mosjoen Fotballklubb (football) was founded separately in 1909. In 1914, the two clubs merged, and changed its name to the present name Mosjoen Idrettslag.
The men's football team currently plays in the Third Division, the fourth tier of Norwegian football. It last played in the Norwegian Second Division in 2000. Former players include Per Joar Hansen, Bent Inge Johnsen and Thomas Drage.