Croisilles Harbour (formerly spelt Croixelles Harbour) is a natural inlet north of Nelson at the westernmost edge of the Marlborough Sounds on the northern coast of New Zealand's South Island. It has two major arms, Ã Âkiwi Bay and Squally Cove.
The inlet was named by early explorer Dumont D'Urville after his mother's home village of Croisilles, Calvados.