For the similar family name, please see Larson.
For the actor sharing this name, please see Larsen (actor).

Larsen was a Human Starfleet officer during the 2370s, as played by a member of Species 8472.

In 2375, the Species 8472 member who impersonated Larsen trained at Terrasphere 8 for infiltrating the Federation. In that recreation, Larsen was assigned to the Federation Council to serve as deputy liaison officer by Admiral Bullock. (VOY: "In the Flesh")

Larsen was played by an unknown performer.
It is unclear if there is a real Larsen in Starfleet or if the persona was created by Species 8472. The Star Trek Encyclopedia (4th ed., vol. 1, p. 455) described the persona created by Species 8472 as a re-creation of Larsen. The reference work spelled his name as "Larson".
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