Maadi (Arabic: المعادي‎ / transliterated: el-Ma‛adi) is a suburb south of Cairo, Egypt. The town is home to the Supreme Constitutional Court of Egypt, Lycée Français du Caire (LFC), Misr American College (MAC), Maadi British International School (MBIS), the Cairo Rugby Club, and the national Egyptian Geological Museum.

Maadi retains the ancient name of the town that once stood on much the same site as today's district, and which has now turned out to be a significant Predynastic archaeological site. However, building activity in the area has destroyed some archaeologically sensitive places.

There was a story that the name was given after the ferries that operated on the Nile side, carrying people across the Nile to the opposite side, hence the name Ma'adi "plural of the word Ma'adiya معدية, which is Arabic for ferry".

The town traces its modern history to 1904 when the railway between Cairo and Helwan was built. This in combination with land speculation by the Mosseri cousins gave rise to a new town. Construction was originally limited to the area right near the railway, but eventually spread down to the river Nile. Also, a large army camp was built east of the railway.