Iwerne Minster is a village and civil parish in the English county of Dorset. It lies on the edge of the Blackmore Vale in the North Dorset administrative district, approximately midway between the towns of Shaftesbury and Blandford Forum. The A350 main road between the towns passes through the edge of the village, just to the west. To the east rise the chalk hills of Cranborne Chase. In the 2001 Census the village had a population of 889.
Iwerne Minster is home to Clayesmore School, a fee-paying boarding and day school.