Historic counties and territories in Quebec, Canada, followed by their respective county seats are listed below. The list is sorted in alphabetical order by county name, but can also be sorted in alphabetical order by seat.
In terms of internal divisions of counties, there are four types of counties:
Parishes as a land unit division arise from the elevation of municipalities based on religious parish limits (parish municipalities). Quebec's counties were dissolved in the early 1980s and Quebec was then divided into regional county municipalities.