Ubertino I (or II) da Carrara (also Uberto, Umberto or Umbertino; died 29 March 1345), called Novello and better known as Ubertinello, was the Lord of Padua from 1338 until his death.
Ubertinello was the son of Jacopino da Carrara of the Carraresi clan of Padua, where he was born early in the 14th century. His mother was Fina Fieschi. To distinguish him from his uncle Ubertino il Vecchio, he is usually known as either Ubertino Novello or Ubertinello.
In August 1319, Ubertinello, Albertino Mussato, and Giovanni di Vigonza were sent by Jacopino to seek help from Bologna when Cangrande I della Scala, with Rinaldo d'Este and Obizzo III of Ferrara, besieged Padua. They failed in their mission and, on 4 November, Jacopino offered the city to the protection of Henry of Görz, the vicar of Treviso for Frederick III of Germany.
On 17 July 1325, Ubertinello became involved in an extremely violent quarrel with horrible repurcussions for Padua. Ubertinello murdered Guglielmo Dente and incurred banishment from the reigning podestà, Pollione Beccadelli. On 22 September, the deceased's brother, Paolo, with Gualpertino Mussato, the abbot of S. Giustina, and the podestà, attacked the Carraresi properties in the city. Ubertinello returned from Chioggia, where he was staying in exile, assassinated the podestà, and besieged his enemies in their homes. He invaded the chancery and burned all documents incriminating him and condemning him. Some of the city's archives were also lost. In the assassinated Beccadelli's place, Ubertinello installed Corradino Bocchi di Brescia. Conrad von Owenstein, the captain and vicar of Frederick III in Padua by appointment of Henry of Carinthia since 1321, banished the Dente and their supporters. Following this series of events, the Carraresi were again the chief family in Padua.