King's Lock is a lock on the River Thames in England. It is in open country to the north of Oxford, Oxfordshire, on the southern bank of the river. The lock was one of the last pound locks built on the Thames being built by the Thames Conservancy in 1928 to replace the former flash lock.At the lock there is a large island. Behind this is the start of the Wolvercote Mill Stream leading to Dukes Cut, which connects the Thames to the Oxford Canal. The Mill Stream rejoins the Thames below Godstow Lock