Lake Manzala, Large Mediterranean wetland in northern Nile Delta, Egypt.

Lake Manzala is a shallow brackish lagoon in northeastern Egypt, the largest of the Nile Delta's northern lakes, measuring 47 km long and 30 km wide as of 2008. Its bed is soft clay, and its natural depth of 1.2 to 1.5 m was altered during construction of the Suez Canal, which runs 47 km along the lake. It lies near Port Said and the ruins of Tanis.

The wetland formed naturally over millennia as the Nile deposited sediments along the coast. Construction of the Suez Canal in the 19th century altered its depth and structure for maritime traffic.

The name derives from Arabic nazala, 'to descend, stop, settle', but it translates a Coptic name: the lake was called pi-Manjōili, 'inn, lodging', rendered in Greek as Xenedokhou. The Arabic name echoes the meaning, not the sound. Fishing remains central: in 1985 the open fishery covered 89,000 ha and employed about 17,000 workers.

The area can be visited from the land or by boat, with southern sections shallower than the northern channels. The best time to explore is from November to March when weather is milder.

The area hosts several bird species that migrate between Europe and Africa, attracting birdwatchers and nature observers. Seasonal changes in water quality and bird populations make each visit different.