Mieczysław Boruta-Spiechowicz (20 February 1894, Rzeszów - 13 October 1985, Zakopane) was a Polish military officer, a general of the Polish Army and a notable member of the post-war anti-communist opposition in Poland.
He joined the army in 1914 and served at various posts within the Polish Legions. After Poland regained her independence in 1918 he remained in active service and took part in both the Polish-Ukrainian War and the Battle of Lwów, in which he commanded a separate defense line, and later a Lwów Infantry Regiment formed out of local volunteers.During the Polish-Bolshevik War he distinguished himself as a skilled commander of the Polish mountain infantry units, of which he formed a regiment and commanded it on various fronts of the conflict.
During the Invasion of Poland he served as the commanding officer of the Boruta Operational Group, a part of the Kraków Army. Taken prisoner by the USSR, he was held in various Gulags and NKVD prisons until set free by the Sikorski-Mayski Agreement of 1941. He then joined Anders’ Polish Army in the East and became the commanding officer of the newly formed Polish 5th Infantry Division. He spent the rest of World War II as the commander of the Polish 1st Armored Corps, combining the Polish 1st Armored Division and the Polish Independent Parachute Brigade.
As one of the very few Polish pre-war generals to return to Communist-held Poland in 1945, he was initially accepted into the Polish Army. However, following a conflict with Karol Świerczewski he was demobilized and retired. He settled in Zakopane, where he became a farmer. He also remained an active member of the anti-communist opposition in Poland and in 1977 became one of the founding members of the ROPCiO movement.