Blacks Harbour is a community in the rural community of Eastern Charlotte, New Brunswick, Canada. It held village status prior to 2023. It is on a harbour of the same name opening onto the Bay of Fundy. It is 15 kilometres southeast of the town of St. George, 3 kilometres west of Beaver Harbour and 56 kilometres east from the town of St. Stephen on Route 176.

Blacks Harbour's exact origin is unknown, possibly an early family name. Post office dates from 1889.

On 1 January 2023, Blacks Harbour amalgamated with St. George and all or part of five local service districts to form the new incorporated rural community of Eastern Charlotte. The name Blacks Harbour remains in official use.

Blacks Harbour is the northern terminus for the year-round Blacks Harbour to Grand Manan Island Ferry operated by Coastal Transport

Fishing has been a vital part of its existence for over 200 years. Connors Brothers Limited was founded in 1885 at Blacks Harbour, now a major international processor of all types of seafood. The company is also a major New Brunswick employer.

In the 2021 Census of Population conducted by Statistics Canada, Blacks Harbour had a population of 907 living in 385 of its 421 total private dwellings, a change of 1.5% from its 2016 population of 894. With a land area of 9.02 km (3.48 sq mi), it had a population density of 100.6/km (260.4/sq mi) in 2021.

Canada Census Mother Tongue - Blacks Harbour, New Brunswick
Census		Total		English				French				English & French				Other
Year		Responses		Count	Trend	Pop %		Count	Trend	Pop %		Count	Trend	Pop %		Count	Trend	Pop %
2011		950		850	1.8%	89.47%		65	18.7%	6.84%		5	n/a%	0.53%		30	100.0%	3.16%
2006		930		835	13.5%	89.79%		80	20.0%	8.60%		0	0.0%	0.00%		15	n/a%	1.61%
2001		1,065		965	1.0%	90.61%		100	4.8%	9.39%		0	100.0%	0.00%		0	100.0%	0.00%
1996		1,135		975	n/a	85.90%		105	n/a	9.25%		10	n/a	0.88%		45	n/a	3.96%