Bolko III of Strzelce (also known as of Opole; Polish: Bolko III Strzelecki (or Opolski); c. 1337 – 21 October 1382) was a Duke of Opole during 1356–1370 (with his brothers as co-rulers) and Duke of Strzelce from 1375 until his death.

After his father's death in 1356, Bolko III and his brothers Władysław Opolczyk and Henry inherited Opole as co-rulers; however, the full government was held by the oldest brother, Władysław Opolczyk.

The independent rule of Bolko III began only around 1375, when he inherited Strzelce after the death of his uncle Albert without male issue.

In 1355, Bolko III, with several other Silesian Dukes, went to Italy with King Charles of Bohemia, who came to Rome for his coronation as Holy Roman Emperor; ten years later, in 1365, he made a journey from Luxembourg to Avignon, and in 1377, together with King Louis I of Hungary and Władysław Opolczyk, he made a military expedition to Bełz.

Bolko III died on 21 September 1382 and was buried in the Franciscan chapel of St. Anna in Opole.