| Bridge Name: | Ponte de São João |
| Carries: | railway |
| Length: | 1140m (3,740feet) |
| Mainspan: | 250m (820feet) |
| Complete: | 1991 |
| Inaugurated: | June 24, 1991 |
The Ponte de São João or St John's Bridge is a railway bridge in Portugal. It was designed by engineer Edgar Cardoso and replaced the functionality of the still standing Gustav Eiffel wrought iron Maria Pia Bridge in 1991. The Linha do Norte connecting Porto and Lisbon runs along this bridge.