| Fall Brook | |
| Pushpin Map: | New York |
| Pushpin Map Caption: | Location of the mouth of Fall Brook |
| Subdivision Type1: | Country |
| Subdivision Name1: | United States |
| Subdivision Type2: | State |
| Subdivision Name2: | New York |
| Subdivision Type4: | County |
| Subdivision Name4: | Delaware |
| Source1 Coordinates: | 42.3218°N -74.5057°W |
| Mouth: | Bear Kill |
| Mouth Coordinates: | 42.3479°N -74.4629°W[1] |
| Mouth Elevation: | 1299feet |
Fall Brook also known as Toad Hollow Brook is a river in Delaware County, New York. It flows into Bear Kill southeast of Grand Gorge. It drains the northeastern side of Schultice Mountain and flows northeast through Toad Hollow.