Margarita "Tingting" de los Reyes Cojuangco (born Margarita Manzano de los Reyes on April 29, 1944) is a Filipino 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).
She is a columnist in The Philippine Star, and was a candidate for a seat in the Senate in the 2013 Philippine Senate Election.
Cojuangco lost in the election.
She is the aunt of Philippine President Benigno Aquino III.