| Official Name: | Valchi Dol |
| Native Name: | Вълчи дол |
| Subdivision Type: | Country |
| Subdivision Name: | Bulgaria |
| Subdivision Type1: | Provinces (Oblast) |
| Timezone: | EET |
| Utc Offset: | +2 |
| Timezone Dst: | EEST |
| Utc Offset Dst: | +3 |
| Pushpin Map: | Bulgaria |
| Pushpin Label Position: | left |
| Pushpin Map Caption: | Location of Valchi Dol |
| Leader Title: | Mayor |
| Postal Code Type: | Postal Code |
| Subdivision Name1: | Varna |
| Population Total: | 3,460 |
| Population As Of: | December 2009 |
| Elevation M: | 270 |
| Postal Code: | 9280 |
| Area Code: | 05131 |
| Coordinates: | 43.4°N 60°W |
| Leader Name: | Veselin Vasilev |
Valchi Dol (bg|Вълчи дол pronounced as /bg/; also transliterated Vǎlči Dol) is a town in northeastern Bulgaria, part of Varna Province. It is the administrative centre of Valchi Dol Municipality, which lies in the northwestern part of the Province. In December 2009 the town had 3,460 inhabitants.[1]
Valchi Dol is located at the watershed of the Dobruja, Varna and Shumen plateaux. Its name means "wolf's ravine" in Bulgarian, which is also reflected in its old Ottoman Turkish name, Kurtdere. It was a village until proclaimed a town in 1974. A diesel power plant was installed in 1929, the first in a village in Bulgaria.