The 3rd constituency of Doubs (French: Troisième circonscription du Doubs) is one of five electoral districts in the department of the same name, each of which returns one deputy to the French National Assembly in elections using the two-round system, with a run-off if no candidate receives more than 50% of the vote in the first round.

The constituency is made up of the eight former cantons of Baume-les-Dames, Clerval, L'Isle-sur-le-Doubs, Maîche, Montbéliard-Est, Montbéliard-Ouest, Rougemont, and Saint-Hippolyte.

In the east it reaches deep into the Jura mountains, where it is bordered by Switzerland.

The seat has generally been held by conservative parties except on the occasions of the Socialist landslides in the 1988 and 1997.

[2] * Nadey stood as a dissident LR member without the support of the party or the UDC alliance.