| Platner Brook | |
| Subdivision Type1: | Country |
| Subdivision Name1: | United States |
| Subdivision Type2: | State |
| Subdivision Name2: | New York |
| Source1: | West Platner Brook |
| Source1 Location: | Town of Franklin, Delaware County, New York |
| Source2: | East Platner Brook |
| Source2 Location: | Town of Franklin, Delaware County, New York |
| Mouth: | West Branch Delaware River |
| Mouth Location: | Fraser, New York, Delaware County, New York, United States |
| Mouth Coordinates: | 42.2422°N -74.9606°W |
| Basin Size: | 14sqmi |
Platner Brook is formed by two branches, the East Platner Brook and West Platner Brook. Platner Brook flows into the West Branch Delaware River by Fraser, New York.[1]