Sheffield is a geographic parish in Sunbury County, New Brunswick, Canada.

[2] Prior to the 2023 governance reform, for governance purposes it formed the local service district of the parish of Sheffield,[3] which was a member of Capital Region Service Commission (RSC11).

[4] The parish was named for Baron Sheffield, notable as a friend of the province.

In 1850 Sheffield was extended to the county line, adding unassigned territory to its rear.

[10][11][12] Parks, historic sites, and other noteworthy places at least partly within the parish.