Robert L. Hedlund (born July 12, 1961) is an American businessman and politician serving as the mayor of Weymouth, Massachusetts.

Hedlund attended Wentworth Institute, Quincy College, and University of Massachusetts Boston.

His former Senate district included Cohasset, Duxbury, Hingham, Hull, Marshfield, Norwell, Scituate, and Weymouth.

In November 2019 Hedlund was re-elected as Weymouth Mayor defeating Edward Cowen by a margin of 82% - 18%.

In November 2023 Hedlund was re-elected as Weymouth Mayor defeating Edward Cowen by a margin of 74% - 24%.