| Ireland Brook | |
| Map: | Ireland Brook.JPG |
| Source1 Coordinates: | 40.4158°N -74.4167°W |
| Mouth Coordinates: | 40.4206°N -74.4853°W |
| Subdivision Type1: | Country |
| Subdivision Name1: | United States |
| Progression: | Lawrence Brook, Raritan River, Atlantic Ocean |
| Mouth Elevation: | 52feet |
Ireland Brook is a tributary of Lawrence Brook in Middlesex County, New Jersey in the United States.
Ireland Brook is a moderately long stream that drains an area in central East Brunswick.
Its source is at 40.4158°N -74.4167°W,[1] near the intersection of Cranbury Road and Rues Lane in east central East Brunswick. It crosses Fern Road, then runs through the East Brunswick Community Park and the Ireland Brook County Park. Crossing Dunhams Corner Road and the New Jersey Turnpike, it continues running through the long Ireland Brook County Park. It crosses Fresh Ponds Road and Riva Avenue, and drains into the Farrington Lake, a dammed section of the Lawrence Brook, at 40.4206°N -74.4853°W.[1]
This stream runs through a park, where it is easily accessible for about half of its distance. It also crosses many roads.