Gesves (French: [ʒɛv]; Walloon: Djeve) is a municipality of Wallonia located in the province of Namur, Belgium.

The municipality consists of the following districts: Faulx-les-Tombes, Gesves, Haltinne, Mozet, and Sorée.

It also includes the hamlets of Gramptinne, Goyet (site of glacial remnants of Neanderthals), Haut-Bois, and Strud (site where fossil of Strudiella devonica, a Late Devonian insect, was discovered).

The total area is 64.92 km2, giving a population density of 97 inhabitants per km2.

On 1 December 2019, the population had grown to 7,246 inhabitants (3,612 men and 3,634 women), representing a growth of 14.63% over the course of 13 years.