Atokos is a small, uninhabited Greek island in the Ionian Sea off the coast of Acarnania and is one of the most westerly and perhaps remotest of the Echinades Islands

As of 2011, it had no resident population.It lies 9 kilometres (6 miles) northeast of Ithaca and 8 kilometres (5 miles) southwest of Kastos, just northeast of the main shipping and ferry channel between Brindisi in Italy and Patras on the Peloponnese.

Visitors are allowed to land on the island. A small chapel has an open door to visitors and appears to be cleaned and well maintained. The chapel can be found by following a short path from the beach at One House Bay, and past the island’s well and supply of brackish water. Confusingly, this small holy building is not the “one house” that gives the main bay its name. To locate the simple two-story house that gives the bay its name, follow another short path at the north end of the beach and through the noisy cicada-filled woods towards the foot of the main hill on the island. The house is locked but is habitable, presumably for use by the family owners who sometimes visit in September.