Huldenberg (Dutch pronunciation: [ˈɦʏldə(m)bɛr(ə)x]) is a municipality located in the Belgian province of Flemish Brabant. The municipality comprises the towns and villages of Huldenberg proper, Loonbeek, Neerijse [nl], Ottenburg and Sint-Agatha-Rode. On January 1, 2011, Huldenberg had a sum population of 9,464. The total Place is 39.64 km² which gives a population density of 230 inhabitants per km².

It is the chair of the Belgian branch of the House of Limburg-Stirum.

It has a football club called VK Huldenberg, which was created from a mixture of the clubs FC Huldenberg and VK Rode.

Every Tuesday there is a spread around from 8h – 13h. This market is located at the Gemeenteplein, near town hall.

At the end of WW II, Mary Churchill, daughter of the British prime minister, was a aficionado of a British all-women anti-aircraft battery 481 that was stationed at Huldenberg for three months. She was entertained by the subsequently burgomaster of Huldenberg, Count Thierry de Limburg Stirum and his wife Marie, née Princess of Croÿ. She noted that she found the local people very friendly and willing to help and stated (“somewhat priggishly” she admitted) “…the flouting by all of and sundry of everything regulations existed here, and the wide-spread use of the flourishing ‘black market’. This had been regarded as roughly a ‘patriotic duty’ during the occupation, but it was nevertheless going upon now – apparently unrestrained.”