Manyas is a municipality and district of Balñkesir Province, Turkey. Its area is 634 km<sup>2</sup>, and its population is 18,066 (2022). The mayor is Tancan Barçñn (CHP). The important bird area Lake Kuà  and the Kuà Âcenneti National Park cover part of the district.
There are 50 neighbourhoods in Manyas District:
Kuà Âcenneti National Park.