Kostievo (Bulgarian: Костиево) is a village in southern Bulgaria, located in Plovdiv Province, Maritsa Municipality.

As of the June 2020 Bulgarian census, the village has a population count of 1,788 people.

[1] Kostievo is located at an elevation of 175 meters (574 ft) above sea level, in the Upper Thracian Plain.

The total land area of the village's region is 23.695 square kilometers (9.149 sq mi).

The community Hall in the village was built in 1928, and was named after "Tsar Boris III".