Tahna Los was a Bajoran male and freedom fighter during the late-24th century. Previously a member of the Bajoran Resistance during the Occupation of Bajor, Tahna later joined the terrorist organization Kohn-Ma to continue his fight against the Cardassians and to fuel his dislike of the Federation's involvement in Bajoran affairs. Later that year, Commander Sisko read an intelligence file about Kira Nerys in which Tahna was mentioned as the "notorious Kohn-Ma organizer". (DS9: "Battle Lines")