Sepia kiensis is a species of cuttlefish native to the Indo-Pacific, specifically the Kai Islands, possibly to Timor and northern Australia. It lives at depth to 256 m. The validity of S. kiensis has been questioned. S. kiensis grows to a mantle length of 37 mm. The type specimen was collected off Kai Island in the Arafura Sea. It is deposited at The Natural History Museum in London.