Ichnae or Ichnai (Greek: Ἴχναι) an ancient town of Bottiaea, Macedonia on the Thermaic Gulf, above the mouth of Loudias river, near modern Koufalia ; built by the Macedonians according to Hazlitt, although Ichnaeans appear independently in epigraphy.

[2] Coins of Ichnaeans, dated to 520-480 BC, carry a bull and wheel with crescentic lateral bars[3] and are categorized to the Thraco-Macedonian type.

According to Mogens Herman Hansen, Ichnae may have been an originally South Paeonian settlement,[4] which already in Archaic times received an influx of Southern Greek colonists.

[7] There is also an undated epitaph in Athens of Eurydike daughter of Dadas, Ichnaian.

Ichnae's site is within the boundaries of the modern municipal unit of Koufalia.