Oostzaan

240px|thumb|Map of municipality of Oostzaan, 2022 Oostzaan () is a municipality and a town in the Zaanstreek, Netherlands, in the province of North Holland. The municipality had a population of in . Oostzaan has a total area of of which is water.

Dutch supermarket chain founded in 1887

motorway in the Netherlands

Zaans is a dialect of Dutch spoken in the Zaan district, which lies north of Amsterdam, in the Dutch province of North Holland. Zaans is one of the oldest dialects in the country. The dialect has similarities to the West Frisian dialect which is spoken in an area further north of the Zaan district.