Nigg Bay is a cove to the east of Aberdeen, between Girdle Ness and Greg Ness, in the old parish of Nigg. The ruined parish church, St Fittick's, lies a short distance from the shore. It is said to have been founded by Fittick, an Irish monk who was washed ashore here after a group of sailors threw him overboard during a storm.
In 2012, Nigg Bay emerged as the preferred location for Aberdeen Harbour's planned expansion, North Beach and Cove Bay having been ruled out. Work began on the ã420 million expansion project in 2017, but was interrupted in 2020 by the COVID-19 pandemic. Despite this setback, the Nigg Bay expansion opened in 2023 as Aberdeen South Harbour.