Auchnagatt (Scottish Gaelic: Achadh nan Cat) is a village and rural area in Buchan, Aberdeenshire, Scotland, situated on the Ebrie Burn and on the A948 road between Ellon and New Deer.

Secondary education is provided at Mintlaw Academy, 9 kilometres (5.6 mi) from the village of Auchnagatt.

The local football team are called the Auchnagatt Barons, who have been in existence for 36 years.

The remains of two earth houses were found at Windy Hill, south-east of the village, in 1850.

More recent history centred on agriculture until the coming of the railway in the 1860s, when sidings and goods sheds were constructed in the village.