- For the Star Trek: Enterprise episode of this name, see: Terra Prime (episode).
- "A new era is at hand...an era that will expose the concept of inter-species unity as an absolute and vicious lie. An era that will witness the advent of a human-centric consciousness that will place our world before all others. As of this moment mankind casts off the shackles of alien interference and now determines its own fate. Terra Prime...forever."
- —John Frederick Paxton, 2155[src]
Terra Prime was a xenophobic organization based on Luna in the 22nd century, that advocated the removal of all extraterrestrials from Earth and the Sol system in general. Before the Xindi attack in 2153 the movement had been losing supporters, but after the attack they began growing again; eventually reaching a point where they worried Prime Minister Nathan Samuels, a former member himself.
In 2155, they were led by John Frederick Paxton, who would lead Terra Prime on a daring raid in which they took over Mars' Verteron Array and used it to threaten Earth by saying that if all non-Humans didn't leave the system immediately they would fire on Starfleet Command. Fortunately, the crew of the Enterprise was able to defeat Terra Prime and redirect the verteron beam into the Pacific Ocean. (ENT episodes: "Demons", "Terra Prime")
In one alternate universe, Terra Prime was successful in its attack on Starfleet Command, leading to a period of isolationism on Earth that lasted into the mid-23rd century, where their symbol continued to be a symbol of anti-alien feelings. (Star Trek: Myriad Universes novel: A Less Perfect Union)