| Country: | MEX |
| Type: | FH |
| Route: | 84 |
| Maint: | Secretariat of Communications and Transportation |
| Length Km: | 100.00 |
| Length Round: | 2 |
| Length Ref: | [1] |
| Alternate Name: | Carretera Manuel Doblado-La Piedad |
| Direction A: | East |
| Terminus A: | near Zapote de Adjuntas, Guanajuato |
| Direction B: | West |
| Terminus B: | in San José de Bazarte, Jalisco |
| Previous Type: | FH |
| Previous Route: | 83 |
| Next Type: | FH |
| Next Route: | 85 |
Federal Highway 84 (Carretera Federal 84) connects Zapote de Adjuntas, Guanajuato to San José de Bazarte, Jalisco. It provides indirect service to La Piedad, Michoacán.