The pyramid of Djoser, sometimes called the Step Pyramid of Djoser or Step Pyramid of Horus Netjerikhet, is an archaeological site in the Saqqara necropolis, Egypt, northwest of the ruins of Memphis. It is the first Egyptian pyramid to be built. The 6-tier, 4-sided structure is the earliest colossal stone building in Egypt. It was built in the 27th century BC during the Third Dynasty for the burial of Pharaoh Djoser. The pyramid is the central feature of a vast mortuary complex in an enormous courtyard surrounded by ceremonial structures and decoration.

The pyramid went through several revisions and redevelopments of the original plan. The pyramid originally stood 62.5 m (205 ft) tall, with a base of 109 m × 121 m (358 ft × 397 ft) and was clad in polished white limestone. As of 1997 the step pyramid (or proto-pyramid) was considered to be the earliest large-scale cut stone construction made by man, although the nearby enclosure wall "Gisr el-Mudir" is suggested by some Egyptologists to predate the complex, and the South American pyramids at Caral are contemporary.

In March 2020, the pyramid was reopened for visitors after a 14-year restoration.