Hamont-Achel (Dutch pronunciation: [ˈɦaːmɔnt ˈɑxəl]; Limburgish: Haëmet-Achel) is a city and municipality located in the Belgian province of Limburg.

It was founded in 1977 by a fusion of the city Hamont and the village Achel.

The total area is 43.66 km2 which gives a population density of 315 inhabitants per km2.

The professional tennis player Elise Mertens lives in Hamont-Achel.

On 18 November 1918, the municipality was the site of one of the worst train explosions in history, when two German munitions trains caught fire and exploded.