Simonshaven is a village in the Dutch province of South Holland. It is a part of the municipality of Nissewaard, and lies about 4 km southwest of Spijkenisse. In 2001, the village of Simonshaven had 231 inhabitants. The built-up area of the village was 0.06 km², and contained 103 residences. The somewhat larger statistical area of Simonshaven has a population of around 290. Until 2015, Simonshaven was part of Bernisse. The poet Augusta Peaux was born in Simonshaven, where her father was a preacher.