Delfshaven is a borough of Rotterdam, Netherlands, on the right bank of river Nieuwe Maas. It was a separate municipality until 1886.
The town of Delfshaven grew around the port of the city of Delft. Delft itself was not located on a major river, so in 1389 a harbour was created about 10 km due south of the city, to be able to receive seafaring vessels and avoid tolls being levied by the neighbouring and competing city of Rotterdam. This settlement was named Delfshaven.
On 1 August 1620 the Pilgrim fathers left Delfshaven with the Speedwell. Since then, the town's Oude Kerk has also been known as the Pelgrimskerk, or in English, the "Pilgrim Fathers Church".
Fishing, shipbuilding and the distillery of jenever were the main sources of income. The Dutch East India Company had important wharves and warehouses in Delfshaven, and one of the Dutch West India Company's most famous commanders, Piet Hein, was born here.
Delfshaven belonged to the city and municipality of Delft until 1811, when it became a separate municipality. Delfshaven was annexed by Rotterdam in 1886 at its own request. The current borough has about 73,000 inhabitants.