Pynns Brook is a local service district and designated place in the Canadian province of Newfoundland and Labrador.

Pynns Brook is in Newfoundland within Subdivision F of Division No.

[2] As a designated place in the 2016 Census of Population conducted by Statistics Canada, Pynns Brook recorded a population of 96 living in 45 of its 73 total private dwellings, a change of -10.3% from its 2011 population of 107.

[1] Pynns Brook is a local service district (LSD)[3] that is governed by a committee responsible for the provision of certain services to the community.

[4] The chair of the LSD committee is Tracy Tipple.