Matthew "Matt" Mortensen (born December 11, 1985) is an American luger who has been competing since 2000.

Mortensen and teammate Jayson Terdiman finished the 2016–2017 season ranked 3rd internationally.

Mortensen's best finish at the FIL World Luge Championships was 7th in the doubles event in Cesana, Italy, in 2011 and 2nd in the Team Relay event in the 2017 World Championships in Igls, Austria.

[2] Mortensen finished 14th in the doubles luge with teammate Preston Griffall at the 2014 Winter Olympics in Sochi.

[1] After Griffall chose to focus on his education for the 2014–15 season, Mortensen teamed up with Jayson Terdiman.