The San Martín Bridge is a medieval bridge over the Tagus River located in the western part of the Spanish city of Toledo, from which a magnificent view of the city is contemplated.

It was originally built in the 13th century, taking the name of the parish to whose jurisdiction it belonged: San Martín.

In its construction it is probable that the Alcántara bridge was taken as a model, although more eyes had to be projected due to the greater width of the Tagus at this point in its course.

In the middle of the 14th century, around 1355, Pedro I of Castile would have set fire to the gates of the bridge, and in 1368 it was damaged again.

It was restored by Archbishop Pedro Tenorio, around 1390, who had the great central arch and the two crenellated towers at the ends built.

During the reign of Carlos II of Spain it was reformed, widening its accesses, and a century later it was paved. From both reforms, an inscription remains on the interior wall of the entrance tower, with the imperial shield flanked by two seated kings.