The Flevopolder is an island polder forming the bulk of Flevoland, a province of the Netherlands.

Unlike other major polders, it is surrounded by lakes and below-sea-level channels.

The Flevopolder, along with the Noordoostpolder, forms the Flevoland province, which is located near Amsterdam in the southwest and Kampen, Overijssel in the northeast.

Unlike other major polders, such as Noordoostpolder and Wieringermeer, the Flevopolder is surrounded by bordering lakes or below-sea-level channels.

However, unlike similar projects, the internal water was then drained by diesel and electric pumps.