| Bull Run Mountain Estates | |
| Settlement Type: | CDP |
| Mapsize: | 260px |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Virginia |
| Subdivision Type2: | County |
| Subdivision Name2: | Prince William |
| Unit Pref: | Imperial |
| Population As Of: | 2010 |
| Population Density Km2: | auto |
| Timezone: | Eastern (EST) |
| Utc Offset: | -5 |
| Timezone Dst: | EDT |
| Utc Offset Dst: | -4 |
| Coordinates: | 38.9092°N -77.6667°W |
| Postal Code Type: | ZIP codes |
| Postal Code: | 20169 |
| Blank Name: | FIPS code |
| Blank Info: | 51-11245 |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 2629755 |
Bull Run Mountain Estates is a census-designated place in Prince William County, Virginia. The population as of the 2010 Census was 1,261.[1] It is located along the east slope of the Bull Run Mountains, between Haymarket and Aldie.