Martin Eugen Ekström (6 December 1887 – 28 December 1954) was a Swedish military adventurer who became the leader of the National Socialist Bloc, an umbrella organization for various fascist and National Socialist groups.

During the Finnish Civil War, he led the Vasa Regiment which was responsible for the Viipuri massacre.

Lieutenant colonel Ekström led the 3rd Battlegroup of the Swedish Volunteer Corps in the Finnish Winter War.

[2] He graduated from the Artillery School in 1916 and completed the German officers examination in Turkey in 1916.

Ekström was military instructor of the Persian Gendarmerie from 1911 to 1915 and was chief of staff of Vaasa White Guard District.