加贝斯湾是突尼斯的海湾，位于突尼斯的地中海东岸，座标34°0′N 10°30′E / 34.000°N 10.500°E / 34.000; 10.500，长度和阔度约100公里。

加贝斯湾的潮汐明显，大潮时高度可高达2.5米。

The Gulf of Gabes, also Cabès, Cabes, Gaps, Tunisian Arabic:خليج قابس‎ ḫalīǧ qābis, also known as Lesser Syrtis (from Greek Σύρτις; Syrtis Minor in Latin), contrasting with the Greater Syrtis in Libya, is a gulf on Tunisia's east coast in the Mediterranean Sea, off North Africa. The gulf roughly spans the coast from Sfax to Djerba. At the head of the gulf is the city of Gabès (Ghannouche) where the tides have a large range of up to 2.1 m at spring tides. Both Gabès and Sfax are major ports on the gulf, supporting sponge and tuna fisheries, with Gabès being the economic and administrative center.