Common Religions
Pharasma (Life, Grave, & Knowledge Domain)- Worship of the Lady of Graves is the de facto religion of Ustalav.
Desna (Trickery Domain)- Varisians that still follow the old ways often worship Desna.
Iomedae (Light, Order, & War Domain)- Those inspired by the Shining Crusade often worship Iomedae.

Uncommon Religions
Shelyn (Trickery & Protection)
Gorum (War)
Erastil (Nature, Order)
Abadar (Order, Protection)
Torag (Forge, Order, Protection)
Calistria (Trickery, Knowledge)
Nethys (Arcane, Knowledge, Protection)

Rare Religions
Cayden Cailean (Trickery)
Sarenrae (Life, Light Domain)
Irori (Knowledge, Order, Life Domain)
Gozreh (Nature, Tempest Domain)