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.
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 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.
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.
On 3 August, Alberto II della Scala, Cangrande's successor at Verona, was imprisoned by Venice, removing the chief obstacle to Marsilio's lordship.
On 5 May, in the Doge's Palace in Venice, with a Florentine embassy present, Ubertinello renewed the treaty of nine months earlier with only slight modifications.
The next year, Ubertinello broke the Scaliger alliances and bound himself with Visconti, Gonzaga, and Azzo da Corregio with the aim of taking Parma.
In September, the allies raided Veronese territory as far as the gates of Vicenza, but the men of Mantua, loaded with booty, retired, leaving the remaining troops insufficient to take the city.
She offered a huge sum of money to Mastino in return for the city, but the Republic of Pisa began besieging in the meantime.
Florence paid 180,000 gold florins for the city, but Ubertinello sent troops instead to aid Pisa, allied with the Republic of Genoa, Gonzaga, Visconti, Corregio, and the other Ghibellines of Tuscany and Romagna.
On 27 March 1345, on the advice of his vicar Pietro da Campagnola, he nominated Marsilietto Papafava, a relative, his heir, bypassing Jacopo, the son of Nicolò.