Sepia saya is a species of cuttlefish known only from its type locality in the southwestern Indian Ocean. It lives at depths of 87 to 117 m.

Sepia saya grows to a mantle length of 90 mm.

The type specimen was collected near the Saya-de-Malha Bank in the Indian Ocean (10°30′S 61°10′E to 10°32′S 61°11′E). It is deposited at the Zoological Museum in Moscow.

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