Linga Sound is the strait between the islands of Whalsay and West Linga in the Shetland islands of Scotland.

The sound has a depth of 11 to 12 fathoms (66 to 72 ft; 20 to 22 m). The narrowest width is 900 feet (270 m) between the 6 fathoms (36 ft; 11 m) contours. The sound is the channel most often used by large vessels. The tidal stream running south through the sound starts about four and a half hours before high water at Lerwick, and the stream starts running north about two hours after high water at Lerwick. The maximum rate is 6 knots. The sound has several islets. The most notable is the Skate of Marrister. A lighthouse on Suther Ness below Brough stands at the northern entrance into Linga Sound.

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  Looking SSW across the Bight of Cudda on the west of the sound towards the Head of Berg on West Linga