| Country: | MEX |
| Type: | FH |
| Route: | 126 |
| Maint: | Secretariat of Communications and Transportation |
| Length Km: | 139.2 |
| Length Round: | 1 |
| Length Ref: | [1] |
| Direction A: | East |
| Terminus A: | El Oro de Hidalgo |
| Direction B: | West |
| Terminus B: | Morelia |
| Previous Type: | FH |
| Previous Route: | 125 |
| Next Type: | FH |
| Next Route: | 127 |
Federal Highway 126 (Carretera Federal 126, Fed. 126) is a free (libre) part of the federal highways corridors (los corredores carreteros federales) of Mexico.[2] The highway runs from Morelia, Michoacán in the west to El Oro de Hidalgo, State of Mexico in the east. The eastern portion of the highway continues on to Atlacomulco as Fed. 5.[3] [4] The two nearest federal highways to the western and eastern termini of Fed. 126 are Fed. 55 in Atlacomulco and Fed. 15 in Morelia.