| Official Name: | Sundown, New York |
| Settlement Type: | Hamlet |
| Pushpin Map: | New York |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | New York |
| Subdivision Type2: | County |
| Subdivision Name2: | Ulster |
| Timezone: | Eastern (EST) |
| Utc Offset: | -5 |
| Timezone Dst: | EDT |
| Utc Offset Dst: | -4 |
| Elevation M: | 312 |
| Coordinates: | 41.8839°N -74.4667°W |
Sundown is a hamlet located within Denning, in Ulster County, New York, United States. It is 34.6 miles from the city of Kingston and 119 miles from New York City. Sundown is near the southern town line of Denning on CR 46.[1]