The canton of Jarnac is an administrative division of the Charente department, southwestern France. Its borders were modified at the French canton reorganisation which came into effect in March 2015. Its seat is in Jarnac.

It consists of the following communes:

  1. Bassac
  2. Bourg-Charente
  3. Chassors
  4. Fleurac
  5. Foussignac
  6. Houlette
  7. Jarnac
  8. Julienne
  9. Mainxe-Gondeville
  10. Mérignac
  11. Les Métairies
  12. Nercillac
  13. Réparsac
  14. Sainte-Sévère
  15. Saint-Même-les-Carrières
  16. Sigogne
  17. Triac-Lautrait

45°41′N 0°10′W/45.68°N 0.17°W/ 45.68; -0.17