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

Southesk Parish is bounded:[2][10][11] Southesk has had the same western, northern, and eastern boundaries from its creation; the boundary with Derby was a straight line running a line running south 68º west[c] from modern Wilsons Point.

[9] In 1920 the boundary with Derby Parish was changed to run along property and grant lines.

[19] The 1954 Act also changed the wording of the boundary with Blackville, Blissfield, and Ludlow Parishes to run partly by an astronomic rather than a magnetic bearing.

[10][11][20] bold indicates an Indian reserve Bodies of water[d] at least partly within the parish.