Valchi Dol Municipality () is a municipality (obshtina) in Varna Province, Northeastern Bulgaria. It is named after its administrative centre - the town of Valchi Dol.
The municipality embraces a territory of 472.5 km<sup>2</sup> with a population, as of December 2009, of 11,093 inhabitants.
Valchi Dol Municipality includes the following 22 places (towns are shown in bold):
The following table shows the change of the population during the last four decades.
According to the latest Bulgarian census of 2011, the religious composition, among those who answered the optional question on religious identification, was the following:
A majority of the population of Vlachi Dol Municipality identify themselves as Christians. At the 2011 census, 56.0% of respondents identified as Orthodox Christians belonging to the Bulgarian Orthodox Church. Muslims constitute the largest minority with 26.3% of its population.