The arrondissement of Épernay is an arrondissement of France in the Marne department in the Grand Est region.

[2] Its population is 116,465 (2021), and its area is 2,722.4 km2 (1,051.1 sq mi).

[4] In January 2006 it absorbed the canton of Ay from the arrondissement of Reims.

[5] As a result of the reorganisation of the cantons of France which came into effect in 2015, the borders of the cantons are no longer related to the borders of the arrondissements.

The cantons of the arrondissement of Épernay were, as of January 2015:[6]