This is a list of names which have been used for different stages of the Tethys:
- Proto-Tethys, from the latest Ediacaran to the Carboniferous 550–330 million years ago (mya)
- Palaeo-Tethys or Paleo-Tethys, from Carboniferous to early Jurassic
- Tethys Ocean proper, or Neo-Tethys, existed between the continents of Gondwana and Laurasia before the opening of the Indian and Atlantic oceans during the Cretaceous period. Roughly, a bigger Mediterranean, continuing right through to the Indian Ocean.
- Alpine or Paratethys sea to the north of the Tethys, roughly where the Alps are today.