Theodoric is a Germanic given name frequently encountered in early medieval European history. Variant spellings include forms such as Theoderic, Theudoric, Theuderic, or Theuderich. It is cognate with the Gothic name Thiudreiks and comprised of the Germanic components þeud ("people") and ric ("power" or "ruler"). The German language form of the name is Dietrich; the English, Derek; the Dutch, Dirk, Diederik, or Dierik. In Romance languages, the French form is Thierry; the Italian and Spanish, Teodorico or Teodoro. The name of the English Tudor royal dynasty is derived from the Welsh Tudur, which is in turn probably derived from the Celtic Teutorigos, which is cognate with Theodoric and carries much the same meaning. The name is not to be confused with Theodore, derived from the Greek Θεοδωρος (Theodoros), meaning 'Gift from God'. Well-known bearers of the name Theodoric include:
- Theodoric I (died 451), king of the Visigoths
- Theodoric II (died 466), king of the Visigoths
- Theodoric the Great (454-526), ruler of the Ostrogoths, Italy, and the Visigoths
- Theuderic I (died ca. 534), Frankish king
- Theuderic II (587-613), Frankish king
- Theuderic III (died 691), king of the Franks
- Theuderic IV (died 737), king of the Franks
- Theodoric Strabo (died 481)
- Theodric of Bernicia, 6th century Anglo-Saxon king
- Saint Tewdrig (alternatively Tewdric or Theodoric) (c. 580 - c. 630), Welsh king of Gwent and Glywysing, who was martyred fighting the Saxons
- Antipope Theodoric (died 1102)
- Theodoric of Chartres (12th century), philosopher
- Theodoric of Freiberg (14th century), theologian and scientist
- Theodoric of York, Saturday Night Live character by Steve Martin
