The Tangcong Vaca Guerilla Unit (TVGU) (Bikol: Geriliang Tangcong Vaca) (Tagalog: Gerilyang Tangkong Baka) was a local Bicolano resistance unit based in Libmanan, Camarines Sur during World War II in the Philippines. The TVGU, originally referred by its founders as the "Anti-Sabotage Unit" in the Philippine Army, engaged predominantly in guerilla warfare against the Japanese's provincial periphery in Camarines Sur, including sabotage against present Japanese military assets, civilian scouting operations, rural patrolling, and, later on in the war, as Allied Intelligence Bureau (AIB) auxiliaries in South Luzon, specifically Bicolano, land intelligience operations.

Primarily led by Leon S.A. Aureus, Elias Madrid, and Sgt. Juan Q. Miranda, the TVGU were renowned as one of the many prominent assets of the anti-Japanese resistance in Camarines Sur and the Bicol Region as a whole during the Second World War.

Formally organized in San Nicolas, Canaman on March 8, 1942, the unit was founded by Sgt. Juan Q. Miranda, Leon S.A. Aureus, Elias and Policarpo Madrid in a secret meeting addressing the dire need to formally organize a local Philippine Army "anti-sabotage unit" in Camarines Sur, of which the TVGU was originally referred to prior to the adoption of its name in May of 1942, against the recent Japanese authorities.

The unit led many locally acclaimed feats of engagement against the Japanese, such as the First Liberation of Naga on May 1, 1942, the Battle of Taguilid Pass on November 28, 1942, and Second Battle of Naga on November 28, 1942. After the war, the USAFFE initally refused to formally recognize the unit as a constituent force among the Camarines Sur-based resistance groups.