Abusir (Arabic: ابو صير  Egyptian Arabic pronunciation: [æbuˈsˤiːɾ]; Egyptian pr wsjr; Coptic: ⲃⲟⲩⲥⲓⲣⲓ busiri, "the resting place of Osiris"; Ancient Greek: Βούσιρις) is the name given to an ancient Egyptian archaeological pyramid complex comprising the ruins of 4 kings' pyramids dating to the Old Kingdom period, and is part of the Pyramid Fields of the Memphis and its Necropolis UNESCO World Heritage Site.

[1] The pyramid complex is named after the neighbouring village of Abusir, in the markaz (county) of Badrashin, Giza.

The locality of Abusir took its turn as the focus of the prestigious western burial rites operating out of the then-capital of Memphis during the Old Kingdom 5th Dynasty.

In the late nineteenth century, a number of Western museums acquired collections of fragmentary papyri from the administrative (temple) records of one Abusir funerary cult, that of king Neferirkare Kakai.

This discovery was supplemented in the late twentieth century when excavations by a Czech expedition to the site revealed papyri from two other cult complexes, that of the pharaoh Neferefre (also read Raneferef) and for the king's mother Khentkaus II.

The Czech Institute of Egyptology of the Faculty of Arts, Charles University in Prague has been conducting excavations at Abusir since 1960, beginning with the mastaba of Ptahshepses, directed by Zbyněk Žába.

The quality of construction of the Abusir pyramids is inferior to those of the Fourth Dynasty; perhaps signalling a decrease in royal power or a less vibrant economy.

[11] The Old Kingdom cemetery at Abusir South includes the following tombs: On a small hill directly south of the pyramid of Neferefre is a cemetery of tombs from the Saite period: Also found at Abusir were substantial remains of a Ramesside temple, perhaps built by Ramses II.