Adamantius or Adamantios may refer to:
People Only name Adamantius (Pseudo-Origen), 4th-century Christian writer Adamantius (physician), 5th-century Jewish physician from Alexandria Adamantius (praefectus urbi), 5th-century politician of the Eastern Roman Empire
Nickname Origen Adamantius, 3rd century early Christian theologian
First name Adamantios Korais (1748–1833), humanist scholar credited with laying the foundations of Modern Greek literature Adamantios Androutsopoulos (1919–2000), Prime Minister of Greece from 1973 to 1974 Adamantios Sampson (fl. 1973–present), archaeologist from Rhodes
Other Adamantius (journal), academic journal of the Italian Research Group on Origen and the Alexandrian Tradition
See also Adeimantus (disambiguation)