Tadeusz Kurcyusz (pseudonyms: Fiszer, gen. Mars, Morski, Żegota) (15 October 1881, Warsaw - 22 or 23 April 1944) was a colonel of the Polish Army.

From 1917 he was an officer of the staff of the Polish I Corps in the East, and a civilian clerk in the Military Commission of the Provisional Council of State in 1918.

During the same period he remained an additional officer of the 30th Field Artillery Regiment in Biała Podlaska.

During his service in this position, he remained a surplus officer of the 2nd Horse Artillery Division.

In December of the same year, he was bought out of prison and transferred to the personnel reserve of the Main Command of the Home Army.

After being released from prison, he joined the National Armed Forces without the knowledge of the Home Army.

He is often mistakenly presented as the plenipotentiary of the Home Army commander for the merger of the National Armed Forces.