Heraclitus of Halicarnassus (Ancient Greek: Ἡράκλειτος ὁ Ἁλικαρνασσεύς, romanized: Herakleitos ho Halikarnasseus; 3rd century BC) was an elegiac poet of the Hellenistic period.

Heraclitus was a Carian, a native of Halicarnassus, a Greek city on the south-west coast of Anatolia. He was a contemporary and friend of Callimachus of Cyrene, who wrote a memorial epigram on him which is preserved in Diogenes Laërtius.^[1][2] Only one poem by Heraclitus himself – an epigram on a mother who died in childbirth giving birth to twins – is extant in the Greek Anthology.^[3]