The arrondissement of Guingamp is an arrondissement of France in the Côtes-d'Armor department in the Brittany region.

[2] Its population is 125,699 (2021), and its area is 2,292.3 km2 (885.1 sq mi).

[3] The communes of the arrondissement of Guingamp, and their INSEE codes, are:[2] The arrondissement of Guingamp 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 Guingamp were, as of January 2015:[6]