The Rajon Iwazewitschy (White Russian Івацэвіцкі раён; Russian Ивацевичский район ) is an administrative unit in the northern part of the Raion in the Breszkaja Woblasz in Belarus. The Rajon has an area of 3,000 km ² and is divided into a Passawet and 20 Selsawets. The administrative center is the city Iwazewitschy.
The Rajon Iwazewitschy is north of the Breszkaja Woblasz. The Nachbarrajone in Breszkaja Woblasz are in the north Baranovitchi, in the east Ljachawitschy, in the southeast Hanzawitschy, in the south of Pinsk and Iwanawa, southwest and northwest Bjarosa Pruzhany.
The largest rivers are Shchara and Hryuda.