Pas-de-Calais' 3rd constituency is based around the city of Lens in the heart of the department famed for its football team and its mines.

Until 2017, the seat was held by Guy Delcourt who previously represented Pas-de-Calais' 13th constituency until its extinction as a result of the 2010 redistricting of French legislative constituencies.

In 2017 the seat was won by José Évrard of the National Front, however in November of that year he joined the breakaway The Patriots party led by Florian Philippot.

Évrard died in January 2022 and was replaced by his substitute Emmanuel Blairy from the National Rally.

Brigitte de Prémont (1995 to 1997) * LREM dissident