| Settlement Type: | Hamlet |
| Aalsum | |
| Subdivision Type: | Country |
| Subdivision Name: |  Netherlands |
| Subdivision Type1: | Province |
| Subdivision Name1: | Groningen |
| Subdivision Type2: | Municipality |
| Subdivision Name2: | Westerkwartier |
| Coordinates: | 53.3069°N 6.37°W |
| Postal Code Type: | Postcode |
| Postal Code: | 9883 |
| Pushpin Map: | Netherlands Groningen#Netherlands#Europe |
| Pushpin Map Caption: | Location of Aalsum in the province of Groningen |
Aalsum (in Dutch; Flemish pronounced as /ˈaːlsʏm/) is a small hamlet in the Dutch province of Groningen. It is located in the municipality of Westerkwartier, about 1.5 km west of Oldehove.[1]
The hamlet was located on a wierde, an artificial dwelling hill. The hill was partially excavated in the 20th century; a bow from the ninth century was found. Plans to reconstruct the hill were canceled.
According to the 19th-century historian A.J. van der Aa, Aalsum had 80 inhabitants in the middle of the 19th century; presumably, this includes the surrounding countryside.