The name Aalst may refer to the following:
- a city belonging to a municipality of the same name in Belgium
- a village in the municipality of Waalre, in the province of Noord-Brabant in the Netherlands
- two villages in the municipalities of Buren and Zaltbommel respectively, in the province of Gelderland in the Netherlands
- Aalst, a 2005 play by Belgian stage director Pol Heyvaert, based on real-life events that transpired in 1999
- Everard Aalst (or Evert van Aelst), a Dutch still life painter
- Wil M.P. van der Aalst, a Dutch computer scientist and professor