Lamberto I da Polenta
Lamberto I da Polenta (c. 1275–22 June 1316) was an Italian condottiero, eldest son of Guido da Polenta il Vecchio, who made the da Polenta masters of Ravenna. In 1301 his father named him successor and Lamberto took up the city's podestàship in perpetuity, founding the da Polenta signoria.
In 1312 he hosted Robert of Anjou in Ravenna during the king's war against Emperor Henry VII. He died in Ravenna on 22 June 1316 and was succeeded by his nephew Guido Novello.