| Hoolihan Brook | |
| Pushpin Map: | New York |
| Pushpin Map Caption: | Location of the mouth of Hoolihan Brook |
| Subdivision Type1: | Country |
| Subdivision Name1: | United States |
| Subdivision Type2: | State |
| Subdivision Name2: | New York |
| Subdivision Type4: | County |
| Subdivision Name4: | Delaware |
| Source1 Coordinates: | 41.9115°N -75.1188°W |
| Mouth: | Delaware River |
| Mouth Coordinates: | 41.8498°N -75.1363°W[1] |
| Mouth Elevation: | 817feet |
Hoolihan Brook is a river in Delaware County and Sullivan County in New York. It flows into the Delaware River in Long Eddy. Hoolihan Brook flows through Gould Pond.