Theonym in the context of "Glossary of ancient Roman religion"

The vocabulary of ancient Roman religion was highly specialized. Its study affords important information about the religion, traditions and beliefs of the ancient Romans. This legacy is conspicuous in European cultural history in its influence on later juridical and religious vocabulary in Europe, particularly of the Christian Church. This glossary provides explanations of concepts as they were expressed in Latin pertaining to religious practices and beliefs, with links to articles on major topics such as priesthoods, forms of divination, and rituals.

For theonyms, or the names and epithets of gods, see List of Roman deities. For public religious holidays, see Roman festivals. For temples see the List of Ancient Roman temples. Individual landmarks of religious topography in ancient Rome are not included in this list; see Roman temple.

In ancient Roman religion and mythology, Pluto (Ancient Greek: Πλούτων, romanized: Ploútōn, Latin: Plūto or Plūton), also known as Dis Pater or Orcus, was the god of the dead and the king of the underworld. The name was originally an epithet or theonym for Hades in ancient Greek religion and mythology, although Pluto was more associated with wealth and never used as a synonym for the underworld itself, representing a more positive concept of the god who presides over the afterlife. He was the eldest son of Saturn (Cronus) and Ops (Rhea), as well as the brother of Jupiter (Zeus) and Neptune (Poseidon). Pluto later married Proserpina (Persephone) and shared many of Hades' attributes, such as the bident, the cap of invisibility, and the three-headed guard dog Cerberus.

While Pluto is commonly considered the Roman equivalent of Hades, the name Plouton was already used by the Greeks to designate Hades and was later adopted by the Romans for their god of the underworld, Dis Pater, which often means "Rich Father" and is perhaps a direct translation of Plouton. Pluto was also identified with the obscure god Orcus, name that the Romans adopted from the Etruscans and which, like Hades, was both for the god of the underworld and for the underworld as a place. On the other hand, Ploutōn was frequently conflated with Ploûtos, the Greek god of wealth, because mineral wealth was found underground and because, as a chthonic god, Pluto ruled the deep earth that contained the seeds needed for a bountiful harvest.

The Tetragrammaton is the four-letter Hebrew-language theonym יהוה‎ (transliterated as YHWH), the name of God in the Hebrew Bible. The four Hebrew letters, written and read from right to left, are yod, he, vav, and he. The name may be derived from a verb that means 'to be', 'to exist', 'to cause to become', or 'to come to pass'.

While there is no consensus about the structure and etymology of the name, the form Yahweh (with niqqud: יַהוֶה) is now almost universally accepted among Biblical and Semitic linguistics scholars, though the vocalization Jehovah continues to have wide usage, especially in Christian traditions. In modernity, Christianity is the only Abrahamic religion in which the Tetragrammaton is freely and openly pronounced.

Odin (/ˈoʊdɪn/; from Old Norse: Óðinn) is a widely revered god in Norse mythology and Germanic paganism. Most surviving information on Odin comes from Norse mythology, but he figures prominently in the recorded history of Northern Europe. This includes the Roman Empire's partial occupation of Germania (c. 2 BCE), the Migration Period (4th–6th centuries CE) and the Viking Age (8th–11th centuries CE). Consequently, Odin has hundreds of names and titles. Several of these stem from the reconstructed Proto-Germanic theonym Wōðanaz, meaning "lord of frenzy" or "leader of the possessed", which may relate to the god's strong association with poetry.

Most mythological stories about Odin survive from the 13th-century Prose Edda and an earlier collection of Old Norse poems, the Poetic Edda, along with other Old Norse items like Ynglinga saga. The Prose Edda and other sources depict Odin as the head of the pantheon, sometimes called the Æsir, and bearing a spear and a ring. Wider sources depict Odin as the son of Bestla and Borr; brother to Vili and Vé; and husband to the goddess Frigg, with whom he fathered Baldr. Odin has many other sons, including Thor, whom he sired with the earth-goddess Jörð. He is sometimes accompanied by animal familiars, such as the ravens Huginn and Muninn and the wolves Geri and Freki. The Prose Edda describes Odin and his brothers' creation of the world through slaying the primordial being Ymir, and his giving of life to the first humans. Odin is often referred to as long-bearded, sometimes as an old man, and also as possessing only one eye, having sacrificed the other for wisdom.

Baal (/ˈbeɪ.əl, ˈbɑːl/), or Baʿal (/bɑː.ɑːl/), was a title and honorific meaning 'owner' or 'lord' in the Northwest Semitic languages spoken in the Levant during antiquity. From its use among people, it came to be applied to gods. Scholars previously associated the theonym with solar cults and with a variety of unrelated patron deities, but inscriptions have shown that the name Baal was particularly associated with the storm and fertility god Hadad and his local manifestations. The Ugaritic god Baal (𐎁𐎓𐎍) is the protagonist of one of the lengthiest surviving epics from the ancient Near East, the Baal Cycle.

Known by epithets like “rider of the clouds” and “Victorious Baal,” he was associated with rain, lightning, wind, fertility, and kingship, and was often depicted in opposition to sea and death deities like Yammu and Mot. Worship of Baal spread throughout the Levant, Egypt, and the Mediterranean via Phoenician colonization, with regional forms such as Baal Hammon in Carthage. The god was also known as "the mighty one", and "the one without equal" ("there is none above him").