Jeffrey Alan Combs (born September 9, 1954) is an American actor known for his horror film roles such as Re-Animator and appearances playing a number of characters in the Star Trek and the DC Animated Universe television franchises.

On television, Combs enjoyed critical and popular success playing alien characters on the various modern Star Trek incarnations, beginning in 1994 with Star Trek: Deep Space Nine, in 2000 with Star Trek: Voyager, and in 2001 with Star Trek: Enterprise. Combs has played nine different onscreen roles in the Star Trek universe. His largest science-fiction role to date has been his regular guest role on Star Trek: Deep Space Nine as the Vorta clone Weyoun. Combs has said that Weyoun was his favorite Star Trek role, and he had a great deal of input in developing the character.

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