(population: 19,446) is a town in the central Netherlands
, in the province of Utrecht
. The municipality covers an area of 42.17 km²
(of which 2.71 km² water).
The municipality of Vianen also includes the following towns, villages and townships: Everdingen, Hagestein, Zijderveld.
Before 2002 it was part of the province of South Holland.