Deities of oaths

thumb|Figure on skis and with a bow, possibly Ullr, on the 11th-century Böksta Runestone thumb|upright|The coat of arms of Ullensaker displays Ullr as a charge.

thumb|Illustration of a statue of Sancus found in the Sabine's shrine on the Quirinal, near the modern church of S. Silvestro In ancient Roman religion, Sancus (also known as Sangus or Semo Sancus) was a god of trust (), honesty, and oaths. His cult, one of the most ancient amongst the Romans, probably derived from Umbrian influences. Cato and Silius Italicus wrote that Sancus was a Sabine god and father of the eponymous Sabine hero Sabus. He is thus sometimes considered a founder-deity.

Mithra ( ; ) is an ancient Iranian deity (yazata) of covenants, light, oaths, justice, the Sun, contracts, and friendship. In addition to being the divinity of contracts, Mithra is also a judicial figure, an all-seeing protector of Truth (Asha), and the guardian of cattle, the harvest, and the Waters.