List of counties of New Brunswick

The Canadian province of New Brunswick has 15 counties, originating in the British tradition of local courts for civil and judicial administration that were officiated by the colony's appointed magistrates.

Counties, parishes and shiretowns are delineated in the Territorial Division Act. While no longer administrative divisions, they continue to define regional communities and have many legacy functions and provincial applications. They figure prominently in residents' sense of place and continue as significant threads in the Province of New Brunswick's cultural fabric (i.e., most citizens always know which county they are in).

Counties are used as the basis of census divisions by Statistics Canada in the national census, while their parishes are the basis for census subdivisions.