Jonathan Archer is a fictional character in the Star Trek franchise. He is the protagonist of the television series Star Trek: Enterprise, where he is portrayed by Scott Bakula. Archer also plays a major role in the formation of Starfleet and the United Federation of Planets.

Archer is the commanding officer of the first starship Enterprise (NX-01) from 2151 to 2161, and is later President of the United Federation of Planets from 2184 to 2192.

According to a computer display in the episode "In a Mirror, Darkly", historian John Gill considered Archer "the greatest explorer of the 22nd century." The same display states that two planets were named after Archer: Archer IV and Archer's Planet.

Archer, the son of famed warp engineer Henry Archer and his wife Sally, was born in 2112 in Schenectady, New York, where he spent most of his formative years; he later claimed to have spent the majority of his life in San Francisco.

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