Martine Ek Hagen (born 4 April 1991) is a Norwegian cross-country skier from Ytre Enebakk.She competed at the FIS Nordic World Ski Championships 2013 in Val di Fiemme, and at the FIS Nordic World Ski Championships 2015 in Falun.
On 4 April 2018, she announced her retirement from cross-country skiing.