Samuil Municipality (Bulgarian: Община Самуил) is a municipality (obshtina) in Razgrad Province, Northeastern Bulgaria, located in the Ludogorie geographical region part of the Danubian Plain.

It is named after its administrative centre - the village of Samuil.

The municipality embraces a territory of 250 km2 (97 sq mi) with a population of 7,522 inhabitants, as of December 2009.

[1] Samuil Municipality includes the following 14 places all of them villages: 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: