The arrondissement of Mayenne is an arrondissement of France in the Mayenne department in the Pays de la Loire region.

[2] Its population is 118,048 (2021), and its area is 2,961.8 km2 (1,143.6 sq mi).

[3] The communes of the arrondissement of Mayenne, and their INSEE codes, are:[2] The arrondissement of Mayenne was created in 1800.

[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 Mayenne were, as of January 2015:[6]