Promontorium Archerusia (//; Latin for "Cape Archerusia" or "Archerusian Cape") is a raised mountainous cape of the Nearside of the Moon, located in the easternmost of Montes Haemus, and is crossed by Rimae Prinius. East of the land cape are Dorsum Nicol and Brackett Crater; southeast is the crater Plinius and the second rim of Plinius. In that location east, it divides the lunar mares (sometimes as lunar plains) of Mare Serenitatis and Mare Tranquilitatis. Its coordinates are .
Promontorium Archerusia was named by Johannes Hevelius and is a misspelling of Acherusia (Greek: Ἀχερουσία Acherousia or Aherousia), a cape in ancient geography located in Paphlagonia on the Black Sea (then Euxine Sea); it is now known as Cape Baba, near Karadeniz Ereğli in Turkey. 
The headlands is long; the northeast with a portion being cut off by the basaltic mare; the length of that portion is 11 kilometres (6.8 mi); that portion has a slight high elevation. The headlands extends to the small land bay in the west dominated by some small streaks. Its total length is about 40 km (25 mi), nearly the same length as the diameter of Plinius Crater.
The mountain feature (not as a headland) was featured in the photo of the album, Apollo: Atmospheres and Soundtracks (1983), it was displayed on the top left of the middle part of the album cover where the album title is written, the north on the album cover is faced to the right.
- "Promontorium Archerusia". Gazetteer of Planetary Nomenclature. USGS Astrogeology Research Program., accessed August 14, 2017
- Hevelius J. (1647). Selenographia sive Lunae descriptio. Gedani: Hünefeld. doi:10.3931/e-rara-238.
- Ewen A. Whitaker, Mapping and Naming the Moon (Cambridge University Press, 1999), p.209.
- Tomaschek W. (1893–1980). "RE:Acherusia". Realencyclopädie der Classischen Altertumswissenschaft. Stuttgart: Metzler.
- W. Smith, ed. (1854). "Acherusia". Dictionary of Greek and Roman Geography. Vol.I. Boston: Little, Brown, and Company. p. 7.
- "Apollo: Atmospheres and Soundtracks Review". Allmusic. Retrieved 14 August 2017.
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