Margarita "Tingting" Manzano de los Reyes Cojuangco (born Margarita Manzano de los Reyes on April 29, 1944) is a Filipina politician, philanthropist and socialite.

She was the former chairman of the Kabalikat ng Malayang Pilipino (Kampi) party and a member of the Council of Philippine Affairs (COPA).

Cojuangco studied at the University of Santo Tomas, finished her master's degree in National Security Administration (MNSA) at the National Defense College, and holds doctorate degrees in Criminology and Philippine History.

She served as a presidential assistant to Gloria Macapagal Arroyo (2001-2004); Undersecretary for Special Concerns of the Department of the Interior and Local Government (March 10 – September 24, 2004); and is a full colonel in the Reserve Forces of the Philippine Army (1989–present); and columnist of the Philippine Star (1999–present).

In 2013, she ran unsuccessfully for senate spot under the opposition group of then-Vice President Jejomar Binay.