Alcimachus, also known as Alcimachus of Apollonia (Greek: Ἀλκίμαχος, flourished 4th century BC) was an Ancient Macedonian nobleman and a relative of Lysimachus. Alcimachus was a son of Alcimachus of Apollonia by unnamed Greek woman and had a brother called . He was the namesake of his father, perhaps his paternal great, grandfather and his known grandparent was his paternal grandfather Agathocles. His father served as an official, and as an active diplomat and administrator in the latter reign of King Philip II of Macedon who reigned 359 BC–336 BC and the first years of his son, King Alexander the Great reigned 336 BC–323 BC.