Saint-Martin (French pronunciation: [sɛ̃ maʁtɛ̃] ⓘ) is a municipality in the district of Hérens in the canton of Valais in Switzerland.

[3] Saint-Martin has an area, as of 2011[update], of 37 square kilometers (14 sq mi).

It consists of the villages of Saint-Martin, Suen, Trogne, Eison, Liez, Praz-Jean and La Luette as well as a pair of hamlets including Ossona.

The blazon of the municipal coat of arms is Azure on a Mount Vert St. Martin robed Or on a Horse Argent cutting his Coat Gules to share with a Beggar Proper.

[4] Most of the population (as of 2000[update]) speaks French (887 or 98.9%) as their first language, German is the second most common (5 or 0.6%) and Portuguese is the third (2 or 0.2%).

[4] The historical population is given in the following chart:[3][11] In the 2007 federal election the most popular party was the CVP which received 60.42% of the vote.

In the federal election, a total of 599 votes were cast, and the voter turnout was 77.8%.

[4] There were 397 residents of the municipality who were employed in some capacity, of which females made up 40.8% of the workforce.

In the tertiary sector; 11 or 18.6% were in wholesale or retail sales or the repair of motor vehicles, 17 or 28.8% were in the movement and storage of goods, 10 or 16.9% were in a hotel or restaurant, 2 or 3.4% were the insurance or financial industry, 3 or 5.1% were technical professionals or scientists, 5 or 8.5% were in education.

[4] From the 2000 census[update], 827 or 92.2% were Roman Catholic, while 20 or 2.2% belonged to the Swiss Reformed Church.