The Angstel is a small river between Abcoude and Loenersloot in the Netherlands, about halfway between Amsterdam and Utrecht.
The Angstel is about 6 km (3.75 mi) long and connects the Gein and Holendrecht rivers with the Aa and Winkel rivers.
[1] Originally the Angstel was a tributary to the Utrechtse Vecht.
The river marks the border of the municipality De Ronde Venen.
Along the river are several Buitenplaats and the castle of Loenersloot.