Lucas Bersamin

Lucas Bersamin
Official Portrait, 2020
40th Executive Secretary of the Philippines
Assumed office
September 27, 2022
PresidentBongbong Marcos
Preceded byVic Rodriguez
25th Chief Justice of the Supreme Court of the Philippines
In office
November 26, 2018  October 18, 2019
Appointed byRodrigo Duterte
Preceded byTeresita de Castro
Succeeded byDiosdado Peralta
163rd Associate Justice of the Supreme Court of the Philippines
In office
April 3, 2009  November 28, 2018
Appointed byGloria Macapagal Arroyo
Preceded byAdolfo Azcuna
Succeeded byHenri Jean Paul Inting
Chairman of the Government Service Insurance System
In office
February 6, 2020  September 27, 2022
Appointed byRodrigo Duterte
Preceded byJesus Clint Aranas
Rolando Macasaet (OIC)
Succeeded byJose Arnulfo Veloso (Acting)
Personal details
Born (1949-10-18) October 18, 1949
Bangued, Abra, Philippines
SpouseAurora Bagares
Children3
EducationUniversity of the Philippines (BA)
University of the East (LL.B.)
AffiliationScintilla Juris Fraternity

Lucas Purugganan "Luke" Bersamin (born October 18, 1949) is a Filipino lawyer and jurist who has served as the 40th executive secretary of the Philippines under President Bongbong Marcos since 2022. He previously served as the 25th chief justice of the Philippines from 2018 and 2019 and as an associate justice from 2009 to 2018.

A graduate of University of the Philippines Diliman and the University of the East College of Law, Bersamin entered the judiciary in 1986, when he became a trial court judge in Quezon City. In 2003, President Gloria Macapagal Arroyo appointed Bersamin to the Court of Appeals before she elevated him to the Supreme Court in 2009. President Rodrigo Duterte appointed him chief justice in 2018 before leaving the court a year later. After his departure, he chaired the Government Service Insurance System from 2020 to 2022 before being appointed as the executive secretary under President Marcos.