Harrys Brook, also known as the H. Greenlands Brook,[1] is a tributary of the Millstone River in Mercer County, New Jersey in the United States.

Harrys Brook starts at 40°21′32″N 74°38′54″W / 40.35889°N 74.64833°W / 40.35889; -74.64833,[1] near Princeton North.

It flows northeast though the city before meeting with another tributary from the northwest.

It crosses Route 27 and drains into the Millstone River at 40°21′57″N 74°37′40″W / 40.36583°N 74.62778°W / 40.36583; -74.62778.

This article related to a river in New Jersey is a stub.