Nigg Bay is a large relatively shallow sandy bay, consisting of mudflat, saltmarsh and wet grassland, located at the north east coast of the Cromarty Firth and is 5 miles to the east of Invergordon, in the district of Ross and Cromarty and is in the Scottish council area of Highland.
During low tide, the Sands of Nigg are exposed. Nigg Bay can be said to start at Balintraid pier - probably the oldest pier on the Cromarty Firth built by Thomas Telford in 1824. There is a wartime mining base alongside the pier and a series of coastal gun emplacements on the road to North Sutor.