The district of Conthey (French: District de Conthey, German: Bezirk Gundis) is an administrative district in the canton of Valais, Switzerland. It has a population of 29,424 (as of 31 December 2020).

The Conthey district was created as the 13th district of the Valais as the canton joined the restored Swiss Confederacy in 1815, accounting for the thirteen stars in the coat of arms of Valais.

It contains the following municipalities:

The blazon of the municipal flag and coat of arms is Argent, two Lions rampant combatant Gules holding together a Sword Or inverted.

Conthey has a population (as of December 2020) of 29,424. Most of the population (as of 2000) speaks French (18,197 or 90.6%) as their first language, German is the second most common (533 or 2.7%) and Portuguese is the third (485 or 2.4%). There are 266 people who speak Italian and 4 people who speak Romansh.