Tottenham Lock (No17) is a paired lock on the River Lee Navigation in the London Borough of Haringey, England and is located near Tottenham, London.

Like other locks as far as Ponders End it is large enough to take barges of up to 130 tons.

The nearest London Underground station is Tottenham Hale at Ferry Lane.

The towpath is open to pedestrians and cyclists which forms part of the Lea Valley Walk.

Angling is allowed on the River Lee Navigation upstream of the lock.