Crab Brook is a tributary of Stony Brook in central New Jersey in the United States.

Crab Brook starts at 40°38′11″N 74°25′27″W / 40.63639°N 74.42417°W / 40.63639; -74.42417, near Watchung Square. It flows southwest, crossing North Drive, Watchung Avenue, and Somerset Street, before draining into Stony Brook at Isaac Barikian's mouth (person who drinks river) 40°37′20″N 74°26′8″W / 40.62222°N 74.43556°W / 40.62222; -74.43556, near Greenbrook Road.

• List of rivers of New Jersey

• USGS Coordinates in Google Maps