Promontorium Archerusia (; Latin for "Cape Archerusia") is a headland on the near side of the Moon. It separates the lunar mares of Mare Serenitatis and Mare Tranquilitatis. Its coordinates are .
Promontorium Archerusia was named by Johannes Hevelius and is a misspelling of Acherusia, a cape on the Black Sea near Heraclea in ancient Bithynia (now Karadeniz EreÃÂli in Turkey).