The Uthman Lands share a single broad religious tradition, one with regional differences but similar core beliefs. In addition to this common polytheistic faith, several other religions are practiced in the modern era.
Uthman Polytheism is generally similar to that of the "Known World', and is dominated by various forms of worship of the same basic suite of deities. Each major cultural zone has its own emphasis that differs from the others, but not enough to generate conflict over these differences. The Tsibirin nations of the western islands emphasize the importance of ancestor worship and the afterlife. The various maritime-oriented cultures in the region emphasize gods of weather, sea, and sky as being more important than others. The Uthman League places commerce above the others.
The Matasinje of the northern coastal regions emphasize local spirits of place almost to the point of being animist or Druidic, while still placing primacy on gods of agriculture and wildlife.
The Ugwundi follow a simpler, more austere sort of faith, with more emphasis on morality and personal conduct. They worship gods of law, order, and the city. Scholars have found many interesting parallels between these gods and similar Keller deities.
The Kenkhisa of the southern regions see the deities as personal aspects of a universal creative force. The deist impulse is strong enough that a foreign faith has supplanted traditional polytheism in some places.
Indalo (Uthman Druidism) is the oldest known religious tradition, nature worship. Worshippers venerate the forces of the natural world, often personified by various deities, usually female. In the Druidic tradition, all other deities are merely shadows, projections of the great creative and destructive forces of Nature.
Indalo has been suppressed by local authorities in some urbanized areas like the Okesemiri Empire as primitive superstition, but it nevertheless remains popular in rural areas, or in the large stretches of wilderness found in parts of the Uthman Lands. Many small villages hew to Indalo-inspired traditions, and many nonhuman races have shamanic priests who can be classified as Druids, based on their beliefs and capabilities. Indalo cults are especially popular among the isolated homesteads and hermits who dwell in the vast wilderness between settled lands.
Kwalukah is the common name given to the adopted monotheistic tradition of Iyabanda Empire, brought from the Taohuan Realm in centuries past and now the official faith of the empire. Followers worship only a single god, This deity, which they refer to only as "Kubunye", is the original creator of the universe, and is eternal, omniscient and omnipotent. This sole god created the world then withdrew to watch it unfold, for the its own inscrutable reasons. According to their beliefs, followers are the chosen people in the world, but they are being tested for the strength of their faith. In the Iyabanda Empire, this has also led to the idea that the faith must be actively proselytized and spread throughout the world.
Kwalukah differs from mainstream Taohuan Zovkanism in that it believes that the other common deities are Kubunye's intermediaries, set up to administer the world in the its stead. The religion is a literary one, filled with numerous works of doctrine and parables, most of which are known by heart by all adults. Followers do not believe in reincarnation, instead believing that souls are judged in the afterlife. The worthy join Kubunye in some unfathomable way, while the unworthy are cast away, either remaining in limbo forever or returning to this world to torment the living.