The Noord ("North") is a short tidal river in the western Netherlands, in the province of South Holland.

It joins the Lek at the city of Ridderkerk and Kinderdijk, and the combined stream is thereafter known as the Nieuwe Maas.

The Noord River separates IJsselmonde island from the Alblasserwaard mainland to the east.

However, as a result of the St. Elizabeth's floods the Merwede found a new and shorter path to the sea (the current Hollands Diep) and the stretch leading north changed into a brackish estuary.

When the flow of the Merwede was better distributed among its lower branches (due to artificial means), the Noord returned to its former state as a tidal freshwater river, but the name remained Noord.