Gilbert Mamery Riera (March 15, 1927 – March 30, 2003) was a Puerto Rican disc-jockey, musicologist, radio station owner, radio and television personality, marketing impresario and composer born in Mayagüez, Puerto Rico. He is the father of the late Puerto Rican talent manager and radio entrepreneur Topy Mamery, Puerto Rican radio announcer and marketing impresario Eric William Mamery, and media announcer and comedian Gricel Mamery. He was also the son of Lebanese-born textile impresario William Mamary (the family name's spelling was later changed during Gilbert's lifetime).
Gilbert Mamery was born to a well-to-do family in Mayagüez, Puerto Rico. His father William was a Lebanese immigrant to the United States who, after moving to Philadelphia and serving in World War I decided to join a sizeable group of Maronite Christian Lebanese immigrants who moved from the States to Puerto Rico in the early years of the 20th century. He established a handkerchief and lace products factory (and ran a numbers game operation as a side occupation), and became a successful businessman. His factory and name became cultural references (in a somewhat unflattering way) in the plena "Aló, ¿Quién Ñama?" by Mon Rivera. Referring to the plena, it is said that Mamary used to agree with the saying that "bad publicity is better than no publicity at all".
Gilbert did not want to follow on the family business since, from an early age, he was obsessed with popular music. A live presentation by Carlos Gardel in Mayagüez's Teatro Yagüez (on 9 April 1935) was a defining moment in his life. He initiated his large collection of music recordings and items soon after.