Epsilon West IV was the fourth planet in the Epsilon West system, in or near Federation space.
In 2328, Mark Stimson boarded the SS Manila at Balder's Planet, bound for Epsilon West IV. This information was part of a passenger manifest recorded in the commercial transport database and reviewed by Data in 2370. (TNG: "Inheritance")
This planet only appeared mentioned in an okudagram on a viewscreen visible in freeze frame.
It was named for director of photography Jonathan West.