Paul Marco (1927-2006) was an American actor. He is best remembered for portraying Police Officer Kelton in three films written and directed by Edward D. Wood Jr.

Marco played Kelton in Bride of the Monster (Experiment #423), Plan 9 from Outer Space (which became a RiffTrax presentation), and Night of the Ghouls, which also featured Tor Johnson reprising his part as Lobo.

Later in his life, Marco appreciated the cult status that Wood's films came to enjoy, and he would make special appearances at screenings and autograph shows. He reprised the role of Kelton in the 2005 film The Naked Monster (co-starring John Agar) and 2009's Kelton's Dark Corner.

In the 1994 biopic Ed Wood, Paul Marco was played by Max Casella.