| Country: | MEX |
| Type: | FH |
| Route: | 203 |
| Maint: | Secretariat of Communications and Transportation |
| Length Km: | 75.3 |
| Length Round: | 1 |
| Length Ref: | [1] |
| Direction A: | North |
| Terminus A: | in El Suspiro, Chiapas |
| Direction B: | South |
| Terminus B: | Tenosique, Tabasco |
| Previous Type: | FH |
| Previous Route: | 200 |
| Next Type: | FH |
| Next Route: | 211 |
Federal Highway 203 (Carretera Federal 203) is a Federal Highway of Mexico.[2] The highway travels from El Suspiro, Chiapas near Emiliano Zapata, Tabasco in the northwest to Tenosique, Tabasco in the southeast.