| 1st constituency of Marne | |
|---|---|
 National Assembly of France | |
 The constituency shown within Champagne-Ardenne | |
| Incumbent deputy | |
| Department | Marne |
| Cantons | Bourgogne, Reims II, Reims IV, Reims VI, Reims X |
| Registered voters | 72,128 (2017) |
The 1st constituency of Marne (French: Première circonscription de la Marne) 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.