| Official Name: | Trevilians, Virginia |
| Settlement Type: | Unincorporated community |
| Pushpin Map: | Virginia#USA |
| Pushpin Label: | Trevilians |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Virginia |
| Subdivision Type2: | County |
| Subdivision Name2: | Louisa |
| Timezone: | Eastern (EST) |
| Utc Offset: | -5 |
| Timezone Dst: | EDT |
| Utc Offset Dst: | -4 |
| Elevation Ft: | 522 |
| Coordinates: | 38.0514°N -78.0728°W |
| Postal Code Type: | ZIP code |
| Postal Code: | 23170 |
| Area Code: | 540 |
| Blank Name: | GNIS feature ID |
| Blank Info: | 1496323 |
Trevilians is an unincorporated community in Louisa County, Virginia, United States. Trevilians is located at the junction of U.S. Route 33 and Virginia State Route 22, 4miles west-northwest of Louisa. Trevilians has a post office with ZIP code 23170.[1]
Grassdale, Green Springs, Ionia, and Westend are listed on the National Register of Historic Places.
The climate in this area is characterized by hot, humid summers and generally mild to cool winters. According to the Köppen Climate Classification system, Trevilians has a humid subtropical climate, abbreviated "Cfa" on climate maps.[2]