Isaac Marin (born 13 February 1946) is a Costa Rican former professional boxer.
He competed in the men's light welterweight event at the 1968 Summer Olympics.
Highlights of his career include fighting Antonio Amaya,[2] beating future world title challenger Francisco Coronado twice,[3][4] future Alexis Arguello world title challenger Diego Alcala[4] and Love Allotey,[5] losing to former world champion Alfonso Frazer[6] and challenging Ricardo Arredondo for the Mexican's World Boxing Council World Super Featherweight (Junior Lightweight) title, losing to Arredondo in a somewhat controversial and close but unanimous fifteen round decision with scores of 145-146, 142-146 and 141-149 in favor of Arredondo, on January 29, 1972, in the Costa Rican capital of San Jose.
[7] Later on in his career, he lost to Antonio Gomez and to Bazooka Limon.
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