The Pallavicini, Pallavicino, and sometimes Paravicino, Paravisini, or Paravicini, were an Italian noble family descended from Oberto I (died 1148). The first Pallavicino fief was created by Oberto II, who received it from Frederick Barbarossa in 1162. A number of lines descended from Guglielmo (died 1217), possessor of a series of fiefs between Parma and Piacenza and a descendant of the Lombard Obertenga family (along with the Este, the Cavalcabò and Malaspina). They are:
A second main branch of the family (or perhaps a separate family) was formed by the descendants of Niccolò Pallavicini (alive in 1154), whose origins are doubtful—probably he belonged to the Genoese patriciate—and whose links with the Obertenghi are uncertain: