Special Agent Martin Fitzgerald is a fictional character on the canceled CBS crime drama Without a Trace, portrayed by Eric Close.

Martin is a member of the FBI missing persons case squad in New York City led by Special Agent Jack Malone.

Originally with White Collar Crimes in Seattle, Martin's father, the Deputy Director of the FBI, had him transferred to New York City when the position became available.

In the second season, Martin again came under the scrutiny of the OPR after he provoked a suspect in a case by punching him after learning that the man had cut the ear off a ten-year-old girl.

Season three revolved around the inter-office romance between Martin and the agent he had been eyeing since he had first joined the team: Samantha Spade.

In the season finale, Martin and his partner Danny Taylor were transferring a prisoner to a detention center when they were ambushed.