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The Ambracian Gulf (Greek: Αμβρακικός κόλπος, Amvrakikós kólpos) is a gulf of the Ionian Sea in northwestern Greece.

The gulf is almost completely enclosed, opening to the sea through only a narrow channel. It is quite shallow, and its shore is broken by numerous marshes, large parts of which form an estuary system.

Photograph of the Ambracian Gulf, taken by space-shuttle mission STS-66 in November 1994. Original caption, from [1]:

STS066-101-039 Levkas Island, Ambracian Bay, Greece November, 1994

The Ambracian Bay, an inlet of the Ionian Sea (bottom left) can be seen in this northeast-looking view. The bay, sometimes referred to as a gulf, is 25 miles 40 km) long and from 4 to 10 miles (6 to 16 km) wide. On the shores of Ambracian Bay are the ruins of several cities important to ancient Greece. Levkas (Leucas) Island is visible in the lower left quadrant of the image. Levkas Island is a mountainous island that covers an area of 115 square miles (300 square km). Olive oil, wine, and tobacco are produced on the island. Covering almost a third of the top portion of the image is the western half of the Pindus Mountains. The Pindus, trending northwest to southeast are a continuation of the Dinaric Alps, but are made up of reduced limestone content compared to the range further to the north. Extending for 100 miles (160 km), the sparsely populated, rugged range is rich in timber. Lake Takhniti, a recreational lake, is discernible in the upper right portion of the image. Ithaki Island is visible near the bottom right of the image.