Schoonhoven is a city and former municipality in the western Netherlands, in the province of South Holland. Since 2015 it has been a part of the municipality of Krimpenerwaard.
The former municipality had a population of data missing in 2019, and covered an area of 6.92 km² of which 0.65 km² water. From 2010 to 2014, it was the smallest municipality in the Netherlands in land area, following the merger of Rozenburg into Rotterdam.
The first winner of the Dutch version of Pop Idol, Jamai Loman, is from this town. Also Jan-Arie van der Heijden, football player for Feyenoord, lives in Schoonhoven.