Didymus (Greek for "twin") may refer to:
People Didymus
Arius Didymus (fl. 1st century BC), Stoic philosopher Thomas the Apostle (died 72 AD), also known as Didymus Didymus Chalcenterus (63 BC–10 AD), Hellenistic scholar and grammarian Didymus the Blind (313–398), ecclesiastical writer of Alexandria Didymus the Musician, music theorist in Alexandria of the 1st century Didymus (died 304), 4th century martyr and companion of Theodora Didymus (family of Honorius), a member of the House of Theodosius Didymus Mutasa (born 1935), Minister of National Security in Zimbabwe
Didymos Didymos (music theorist), ancient Greek music theorist Didymos I (1921–2014), Catholicos of the East and Malankara Metropolitan, the Primate of the Malankara Church of India from 2005 to 2010.
Fictional characters Sir Didymus, a fictional character from the movie Labyrinth
Animals Didymus (beetle), a genus of weevils found in New Zealand, the Kermadec and Norfolk Islands Leptodactylus didymus, a species of frog in Bolivia and Peru
Other 65803 Didymos, an asteroid forming a twin pair with Dimorphos (the target of the DART mission)
See also
Didimus, a genus of beetle
Didymos (disambiguation)