Durbuy is a city and municipality of Wallonia located in the province of Luxembourg, Belgium.

In medieval times, Durbuy was an important centre of commerce and industry. In 1331, the town was elevated to the rank of city by John I, Count of Luxemburg, and King of Bohemia.

In 1628 Anthonie II Schetz obtains the Seigneurie of Durbuy, by permission of Felipe IV of Spain. One of the people connected to the city was the son of Lancelot II: Charles Hubert Augustin Schetz, (1662-1726), Count of Durbuy. In 1756 the descendants of the House of Schetz obtain the Castle. Since then the House of Ursel resides in the Castle. The current castle was built in 1880.

The Ourthe river flows through the municipality.

Tourism and recreation are its main activities nowadays. Durbuy is often misrepresented, by itself and by tourism promoters, as 'the smallest city of the world'.