Leonor "Liling" Mirasol Magtolis-Briones (Tagalog: [lɛˈnɔɾ bɾiˈjonɛs]; born October 16, 1940)[1] is a Filipino academician, economist, and civil servant who served as Secretary of Education under the Duterte administration.

She is a former Presidential Adviser for Social Development under President Joseph Ejercito Estrada, with the rank of department secretary and was National Treasurer of the Philippines (head of the Bureau of the Treasury) from August 1998 to February 2001.

Her stints include teaching public fiscal administration at the University of the Philippines; and serving as secretary to the Commission on Audit for seven years, consultant to the Senate of the Philippines, Asian Development Bank and the United Nations Development Program, lead convenor of Social Watch Philippines, Inc.,[7] coordinator of Social Watch Asia, member of the Coordinating Committee of Social Watch International, chair of the board of Focus on the Global South, the first Filipino member of the Club of Rome,[6] director for Policy and Executive Development at the National College of Public Administration and Governance at the University of the Philippines Diliman, and vice-president for finance in the same university.

[10] On May 28, 2016, then president-elect Rodrigo Duterte offered Briones the Secretary of Education post,[11] which she formally accepted on June 7, 2016.

She oversaw the continuation of the K-12 program implementation which began in 2012, and during the COVID-19 pandemic, shifting from physical, face-to-face classes to a blended learning approach due to travel restrictions to prevent the spread of the disease.