| Country: | EUR |
| Type: | E |
| Route: | 43 |
| Map Custom: | yes |
| Direction A: | South |
| Terminus A: | Bellinzona, Switzerland |
| Direction B: | North |
| Terminus B: | Würzburg, Germany |
| Countries: |  Switzerland Austria Germany |
European route E43 is an E-road going from Bellinzona in Switzerland over Chur, Switzerland and Ulm, Germany to Würzburg, Germany.