John Rualo Castriciones (born January 8, 1962), also known by the nickname Bro. John, is a Filipino lawyer and writer who served as the Secretary of Agrarian Reform under the Duterte administration from 2017 to 2021. He was formerly Undersecretary for Operations of the Department of the Interior and Local Government from 2016 to 2017. A member of the Philippine Military Academy "Maharlika" class of 1984, Castriciones also served in various capacities under two previous administrations and as a law school professor at his alma mater Arellano University. His appointment to the Agrarian Reform portfolio was approved by the Commission on Appointments on May 29, 2018, after being bypassed earlier by the commission on March 14, 2018, and reappointed by Duterte on March 22, 2018. Castriciones fou