Tildonk is a village located in the Belgian province of Flemish Brabant[1] and, since 1977, is part of the municipality of Haacht, together with Wespelaar, Wakkerzeel and Kelfs.

Traces of civilization have been found from the period of around 3000 BCE between the hamlet Hambos and adjacent Kelfs.

The oldest mention of Tildonk occurred in 1107 in the family name of Reinerus de Thieldunck.

During the 12th century the knights van Tildonk, pledged to the Duke of Brabant, lived in two mottes: Oudenborg and Nieuwenborg (where the current Kasteeltje is located).

Tildonk was elevated to the title of county in 1699 as part of the fiefdom of Charles L'Archier.