West-Mexican Swallowtail
Battus eracon
- Least concern
- Card rarity: Common
- Insects

Battus eracon, the west-Mexican swallowtail or Colima swallowtail, is a species of butterfly in the family Papilionidae. It is found in western Mexico where it is local and uncommon. The larvae feed on Aristolochia tentaculata.
Classification
- Class
- Insecta
- Order
- Lepidoptera
- Family
- Papilionidae
- Genus
- Battus