Altforst is a village in the Dutch province of Gelderland.

It is a part of the municipality of West Maas en Waal, and lies about 10 km north of Oss.

It was first mentioned in 1134 as Altfurse, and means "old settlement near furze (ulex europaeus)".

It was a low-lying area, and therefore, three artificial mounds have been erected in the village.

The Dutch Reformed Church dates from 1824 and was decommissioned in 1970.