| Official Name: | Castleton Four Corners, Vermont |
| Settlement Type: | Census-designated place |
| Other Name: | Castleton Corners |
| Pushpin Map: | Vermont#USA |
| Pushpin Label: | Castleton Four Corners |
| Coordinates: | 43.6083°N -73.2083°W |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Vermont |
| Subdivision Type2: | County |
| Subdivision Name2: | Rutland |
| Subdivision Type3: | Town |
| Subdivision Name3: | Castleton |
| Area Footnotes: | [1] |
| Area Total Km2: | 5.57 |
| Area Land Km2: | 5.51 |
| Area Water Km2: | 0.06 |
| Population As Of: | 2020 |
| Population Footnotes: | [2] |
| Population: | 699 |
| Timezone: | Eastern (EST) |
| Utc Offset: | -5 |
| Timezone Dst: | EDT |
| Utc Offset Dst: | -4 |
| Elevation Ft: | 445 |
| Postal Code Type: | ZIP Codes |
| Postal Code: | 05735 (Castleton) 05732 (Bomoseen) 05750 (Hydeville) |
| Area Code: | 802 |
| Blank Name: | FIPS code |
| Blank Info: | 50-12062 |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 2807145 |
Castleton Four Corners is a census-designated place (CDP) in the town of Castleton, Rutland County, Vermont, United States. It consists of the unincorporated villages of Castleton Corners and Hydeville. As of the 2020 census, the CDP had a population of 699,[2] out of 4,458 in the entire town.
The CDP is in northwestern Rutland County, in the southwest part of the town of Castleton. It is bordered to the east by Castleton village and to the west by the town of Fair Haven. Vermont Route 4A is the main road through the CDP; it leads east through Castleton village 9miles to West Rutland and west 3miles to Fair Haven village. Vermont Route 30 crosses Route 4A at Castleton Corners and leads north to Middlebury and south 6miles to Poultney. U.S. Route 4, a four-lane freeway, forms the northern edge of the CDP, with access from Exit 4 (Route 30). US 4 leads east to Rutland and west to Whitehall, New York.
The CDP is bordered to the south by the Castleton River, a west-flowing tributary of the Poultney River, which it joins at the New York state line on the west side of Fair Haven. The outlet of Lake Bomoseen, which flows south to the Castleton River, is in Hydeville. Castleton Four Corners is part of the Lake Champlain watershed.