Pope Pius VIII (r. 1829–1830) created six new cardinals in three consistories.
27 July 1829
Cesare Nembrini Pironi Gonzaga, bishop of Ancona – cardinal-priest of S. Anastasia (received the title on 28 September 1829), † 5 December 1837 Remigio Crescini, bishop of Parma – cardinal-priest of S. Giovanni a Porta Latina (received the title on 5 July 1830), † 20 July 1830
15 March 1830
All the new cardinals received their titles on 5 July 1830. Thomas Weld, titular bishop of Amiclea – cardinal-priest of S. Marcello, † 10 April 1837 Raffaele Mazio – cardinal-priest of S. Maria in Trastevere, † 4 February 1832 Domenico de Simone, prefect of the Papal Household – cardinal-deacon of S. Angelo in Pescheria, † 9 November 1837
Eight other cardinals were created in pectore but their names were never published.
5 July 1830
Louis François-Auguste de Rohan Chabot, archbishop of Besançon – cardinal-priest of SS. Trintà al Monte Pincio (received the title on 28 February 1831), † 8 February 1833