Kuressaare is a town on Saaremaa island in Estonia. It is the administrative centre of Saaremaa Parish and the capital of Saare County. Kuressaare is the westernmost town in Estonia. The recorded population on 1 January 2018 was 13,276.

The town is situated on the southern coast of Saaremaa island, facing the Gulf of Riga of the Baltic Sea, and is served by the Kuressaare Airport, Roomassaare harbour, and Kuressaare yacht harbour.

The medieval episcopal Kuressaare Castle today houses the Saaremaa Regional Museum. The original wooden castle was constructed between 1338 and 1380, although other sources claim a fortress was built in Kuressaare as early as 1260. In 1968, architect Kalvi Aluve began studies on Kuressaare Castle.

The town hall was originally built in 1654, and restored, retaining classicist and baroque features. It was last restored in the 1960s with dolomite stairs at the front. St Nicolaus Church was built in 1790.

The annual Saaremaa Opera Days (Saaremaa Ooperipäevad) have been held in Kuressaare each summer since 1999. Other festivals include Kuressaare Chamber Music Days (Kuressaare Kammermuusika Päevad), held since 1995 and Kuressaare Maritime Festival (Kuressaare Merepäevad), held since 1998. Kuressaare also hosts the FC Kuressaare football club.