Which Titaness was the goddess of divine law and order?

Themis was the Titaness who personified divine law, order, justice, and custom.

Themis was one of the twelve Titans born to Gaia and Uranus. Her name is related to the Greek idea of themis: the established order, proper custom, or what is divinely set in place. Her authority therefore concerned more than courtroom punishment; it covered the rules that kept society, family relationships, assemblies, and the cosmos properly ordered.

In myth, Themis became Zeus’s second wife after Metis. Their children included the Horae, associated with the seasons and orderly cycles, and the Moirai, the Fates, in some traditions. Themis was also linked with prophecy and the Oracle of Delphi, sometimes described as holding the oracle before Apollo took possession of it.

Readers often confuse Themis with Dike, Astraea, or Nemesis. Dike represented a more specific form of human or temporal justice, Astraea embodied justice and later became associated with the constellation Virgo, and Nemesis brought retribution against excessive pride. Themis instead represents the deeper principle of divine and social order. Modern images of Lady Justice sometimes borrow attributes associated with her, although the modern figure is not simply identical to the ancient goddess.