Arrondissement of Châteaubriant
The arrondissement of Châteaubriant is a former arrondissement of France in the Loire-Atlantique department in the Pays de la Loire region. In January 2017 it was merged into the new arrondissement of Châteaubriant-Ancenis. It had 53 communes, and its population was 126,603.
Composition
The communes of the arrondissement of Châteaubriant, and their INSEE codes, were:| 1. Abbaretz | 2. Avessac | 3. Blain | 4. Bouvron |
| 5. Casson | 6. Châteaubriant | 7. Conquereuil | 8. Derval |
| 9. Erbray | 10. Fay-de-Bretagne | 11. Fercé | 12. Fégréac |
| 13. Grand-Auverné | 14. Guémené-Penfao | 15. Héric | 16. Issé |
| 17. Jans | 18. Juigné-des-Moutiers | 19. La Chapelle-Glain | 20. La Chevallerais |
| 21. La Grigonnais | 22. La Meilleraye-de-Bretagne | 23. Le Gâvre | 24. Les Touches |
| 25. Louisfert | 26. Lusanger | 27. Marsac-sur-Don | 28. Massérac |
| 29. Moisdon-la-Rivière | 30. Mouais | 31. Nort-sur-Erdre | 32. Notre-Dame-des-Landes |
| 33. Noyal-sur-Brutz | 34. Nozay | 35. Petit-Auverné | 36. Petit-Mars |
| 37. Pierric | 38. Plessé | 39. Puceul | 40. Rougé |
| 41. Ruffigné | 42. Saffré | 43. Saint-Aubin-des-Châteaux | 44. Saint-Julien-de-Vouvantes |
| 45. Saint-Mars-du-Désert | 46. Saint-Nicolas-de-Redon | 47. Saint-Vincent-des-Landes | 48. Sion-les-Mines |
| 49. Soudan | 50. Soulvache | 51. Treffieux | 52. Vay |
| 53. Villepot |