Roberto Ubaldini (1581 – 22 April 1635) was a bishop and cardinal of the Catholic Church.

[1] He was appointed Bishop of Montepulciano in 1607, and ordained to that post on 3 Feb 1608 by Jacques Davy du Perron, Archbishop of Sens, with Henri de Gondi, Bishop of Paris, and Jean de Bonsi, Bishop of Béziers, serving as co-consecrators.

[1] He was elevated to the status of cardinal in 1615, and made Prefect of the Sacred Congregation of the Council in 1621.

He served as nuncio in France, and served as secretary to Pope Paul V. He maintained a friendship with poets Marini and Bracciolini.

[2] While bishop, he was the principal consecrator of:[3]