Blackville is a geographic parish in Northumberland County, New Brunswick, Canada.

The parish was named in honour of William Black, Administrator of the province at the time of its erection due to the absence of Lieutenant-Governor Howard Douglas.

[10] Neighbouring Blissfield Parish was named in honour of John Murray Bliss, who was Administrator of the province prior to Douglas's arrival.

[12][13][22] Parks, historic sites, and other noteworthy places at least partly within the parish.

Revised census figures based on the 2023 local governance reforms have not been released.