Justin (English)

Where does "Justin" come from?

The name Justin traces its roots back to the ancient Proto-Indo-European concept of *h₂yew-, which denoted what is straight, upright, or aligned with vital force. This evolved into the Latin adjective iūstus, meaning 'just' or 'righteous,' which eventually combined with the suffix -īnus to form the name Iūstīnus. Over time, this Latin designation traveled into English as Justin, carrying forward its long historical association with law and integrity.

Full etymology tree

• Justin (English), 'A male given name from Latin, popular in the English-speaking world since the 1970s.'
  • inherited Iūstīnus (Latin), 'a male given name, feminine equivalent Iūstīna, equivalent to Koine Greek Ἰουστῖνος (Ioustînos) or English Justin'
    • suffix Iūstus (Latin)
      • inherited iovestos (Latin), 'Old Latin form of iūstus'
        • suffix iūs (Latin), 'law, right'
          • inherited *jowos (Proto-Italic), 'court of law'
            • inherited *h₂yew- (Proto-Indo-European), 'straight, upright, right'
              • derived *h₂ey- (Proto-Indo-European), 'vital force, life, age, eternity'
        • suffix -tus (Latin), 'Forms the past participle of verbs.'
          • inherited *-tos (Proto-Italic), 'Creates verbal adjectives from verb stems.'
            • inherited *-tós (Proto-Indo-European), 'Creates verbal adjectives from verb roots.'
    • suffix -īnus (Latin), 'Of or pertaining to; -ine; Can indicate a relationship of position, possession, or origin.'
      • inherited *-īnos (Proto-Italic), 'of/belonging to'
        • inherited *-iHnos (Proto-Indo-European), 'Creates adjectives of materials.'

Direct ancestors

• Iustinus (Latin)

Updated June 2026

Etymology data from Wiktionary, CC BY-SA 4.0 · About Miraris