Hook of Holland is a town in the southwestern corner of Holland, hence the name; hoek means "corner" and was the word in use before the word kaap – "cape", from Portuguese cabo – became Dutch. The English translation using Hook is a false cognate of the Dutch Hoek, but has become commonplace. It is located at the mouth of the New Waterway shipping canal into the North Sea. The town is administered as a district of the municipality of Rotterdam. Its district covers an area of 16.7 km2, of which 13.92 km2 is land. On 1 January 1999 it had an estimated population of 9,400.

The Nieuwe Waterweg is a ship canal in the Netherlands from het Scheur west of the town of Maassluis to the North Sea at Hook of Holland: the Maasmond, where the Nieuwe Waterweg connects to the Maasgeul. It is the artificial mouth of the river Rhine.