Eugenio Rolando Martínez Careaga[1] (alias Musculito, July 8, 1922 – January 30, 2021) was a member of the anti-Castro movement in the early 1960s, and later was one of the five men recruited by G. Gordon Liddy and E. Howard Hunt in 1972 for the Memorial Day weekend Watergate burglary at the Democratic National Committee (DNC) headquarters in Washington, D.C.

After completing his 15 month prison term,[3] Martinez was pardoned by President Ronald Reagan in 1983.

[3] On August 31, 2016, the conservative watchdog group Judicial Watch obtained CIA internal documents, through a FOIA request, that stated Martinez was a paid asset of the Agency at the time of the break-in.

Martinez was portrayed in All the President's Men, the 1976 film retelling the events of the Watergate scandal, by Dominic Chianese.

The 2012 novel The Cassandra Project (ISBN 978-1-937008-71-0) by Jack McDevitt and Mike Resnick, set in 2019 and correctly predicting that Martinez would be the last surviving Watergate burglar at that time, has him divulge to a character that the true purpose of the Watergate burglary was to obtain the notebook of another character (supposedly a close friend of both John Ehrlichman and Larry O'Brien) relating to discoveries made by a secret moon landing, and the DNC wiretaps were a diversion.