Aegospotami (Αἰγὸς Ποταμοί) or Aegospotamos (i.e. Goat Streams) is the ancient Greek name for a small river issuing into the Hellespont (Modern Turkish Çanakkale Boğazı), northeast of Sestos.

At its mouth was the scene of the decisive battle in 405 BC by which Lysander destroyed the Athenian fleet, ending the Peloponnesian War. The ancient Greek township of that name, whose existence is attested by coins of the 5th and 4th centuries, and the river itself were located in ancient Thrace in the Chersonese.

According to ancient sources including Pliny the Elder and Aristotle, in 467 BC a large meteorite landed near Aegospotami. He described it as brown in colour and the size of a wagon load; it was a local landmark for more than 500 years. A comet, tentatively identified as Halley’s Comet, was reported at the time the meteorite landed. This is possibly the first European record of Halley’s comet.

Aegospotami is located on the Dardanelles, northeast of the modern Turkish town of Sütlüce, Gelibolu.