Martensville was a provincial electoral district for the Legislative Assembly of Saskatchewan, Canada, named after the city of Martensville, located north of Saskatoon.

The electoral district was created through the Representation Act, 2002 (Saskatchewan), mostly out of the former constituency of Rosthern.

Smaller communities in the district included the towns of Hague, Waldheim, Osler, and Dalmeny; and the village of Hepburn.

It was essentially replaced by Martensville-Warman, a new constituency encompassing a portion of the old electoral district.

A provincial by-election was held on 5 March 2007 to fill the vacancy left when MLA Ben Heppner died of prostate cancer.