|Native Species:||Antos natives|
Antos IV was the inhabited fourth planet of its star system. This was the homeworld of the Antos IV natives and the energy-controlling species known as the giant dry-worms. This planet had a non-hostile relationship with the Federation.
Prior to stardate 5718, Captain Garth of Izar suffered an accident in which he was maimed and dying. He was transported to this planet by an unnamed Federation starship. As he was being cured, the natives taught him the art of cellular metamorphosis. This medical procedure was used to restore the destroyed parts of a body. After he had regained his health, the captain offered them the galaxy. When they refused his offer, he declared them enemies of the Federation and condemned them to death. Before he could destroy them, the starship crew turned against him. (TOS: "Who Mourns for Adonais?", "Whom Gods Destroy")
- Antos IV (Kappa Delphini IV): In 2378, Antos IV was a Federation member. ("United Federation of Planets I")
- Antos System (Kappa Delphini System): The system was located in non-aligned space. This was a single star system. Antos was a G-class star with a magnitude of +3, which was ten times brighter than Sol. ("United Federation of Planets I")