The Yalgorup Important Bird Area comprises a group of parallel, linear wetlands, with a collective area of 59 km2, on the Swan Coastal Plain of south-west Western Australia between the cities of Mandurah and Bunbury.

The site encompasses the wetlands of the Yalgorup National Park; it lies just to the south of the Peel-Harvey IBA but is apparently used by waterbirds as a distinct wetland system.

The major wetlands of the site are Lakes Clifton, Preston, Pollard, Yalgorup, Boundary, martins Tank, Hayward and Newnham.

Median annual rainfall in the area is about 880 mm, falling mainly from May to August.

[1] The site has been identified as an Important Bird Area (IBA) by BirdLife International because it supports fairy terns, large numbers of hooded plovers and over 1% of the world populations of Australian shelducks, red-necked stints, banded stilts and, sometimes, musk ducks.