Aletheia is a Greek name meaning “truth,” from the classical Greek word for truth or disclosure.
Aletheia is one of the most philosophically charged names in the Greek tradition. It is the ancient Greek word for 'truth' or 'disclosure' — literally 'un-hiddenness' (a-lethe, negating the river Lethe, the mythological river of forgetfulness and concealment). For the pre-Socratic philosophers and later Plato, aletheia was not merely factual accuracy but the revelation of deeper reality, the uncovering of what genuinely is.
Martin Heidegger famously returned to this root meaning in the 20th century, arguing that truth in its highest sense is a kind of unconcealment — a perspective that electrified 20th-century continental philosophy. In early Christianity, Aletheia was occasionally personified as a virtue, a divine feminine emanation of truth. Among Gnostic texts, particularly in the Valentinian tradition, Aletheia was enumerated as one of the Aeons — primal spiritual forces emanating from the divine pleroma.
This gave the name a mystical, cosmological weight that few names can claim. Today Aletheia is experiencing a quiet renaissance among parents drawn to classical learning, philosophy, or simply beautiful, uncommon Greek names. It occupies rare company: a name that is simultaneously ancient, intellectually resonant, and genuinely lovely to say aloud. Nicknames like Theia or Allie keep it grounded for everyday life while the full form retains its remarkable depth.