布里斯托湾（Bristol Channel）是不列颠群岛的一处主要海湾，两边分别为威尔士和英格兰的德文郡及森麻实郡，英国最长的河流塞文河经由布里斯托尔湾注入凯尔特海。布里斯托尔湾因地形原因而容易产生高潮。

布里斯托尔湾得名于沿岸城市布里斯托。

The Bristol Channel (Welsh:Môr Hafren) is a major inlet in the island of Great Britain, separating South Wales from Devon and Somerset in South West England. It extends from the lower estuary of the River Severn (Welsh:Afon Hafren) to the North Atlantic Ocean. It takes its name from the English city of Bristol, and is over 30 miles (50 km) across at its widest point.