Pope Pius IX (r. 1846–1878) created 123 cardinals in 23 consistories.

Pius created four cardinals at his first consistory, two of them in pectore.^[1]

1. Gaetano Baluffi (1788–1866)
2. Raffaele Fornari (1787–1854), in pectore, announced 30 September 1850
3. Pietro Marini (1794–1863)
4. Giuseppe Bofondi (1795–1867), in pectore, announced 11 June 1847

1. Pierre Giraud (1791–1850)
2. Jacques-Marie-Antoine-Célestin Dupont (1792–1859)
3. Giacomo Antonelli (1806–1876)

1. Carlo Vizzardelli (1791–1851)

1. Paul-Thérèse-David d'Astros (1772–1851)
2. Juan José Bonel y Orbe (1782–1857)
3. Giuseppe Cosenza (1788–1863)
4. Jacques-Marie-Adrien-Césaire Mathieu (1796–1875)
5. Judas José Romo y Gamboa (1779–1855)
6. Thomas-Marie-Joseph Gousset (1792–1866)
7. Maximilian Joseph Gottfried Sommerau Beeckh (1769–1853)
8. Johannes von Geissel (1796–1864)
9. Pedro Paulo de Figueiredo da Cunha e Melo (1770–1855)
10. Nicholas Wiseman (1802–1865)
11. Giuseppe Pecci (1776–1855)
12. Melchior von Diepenbrock (1798–1853)
13. Roberto Giovanni F. Roberti (1788–1867)

1. Domenico Lucciardi (1796–1864)
2. Ferdinand-François-Auguste Donnet (1795–1882)
3. Gerolamo Marquese d'Andrea (1812–1868)
4. Carlo Luigi Morichini (1805–1879)
5. Michele Viale-Prelà (1798–1860)
6. Giovanni Brunelli (1795–1861)

1. János Scitovszky (1785–1866)
2. François-Nicholas-Madeleine Morlot (1795–1862)
3. Giusto Recanati (1789–1861)
4. Domenico Savelli (1792–1864)
5. Prospero Caterini (1795–1881)
6. Vincenzo Santucci (1796–1861)

1. Gioacchino Pecci (1810–1903) - Elected Pope Leo XIII (1878–1903)
2. Camillo di Pietro (1806–1884)

1. Joseph Othmar Rauscher (1797–1875)
2. Karl-August von Reisach (1800–1869)
3. Clément Villecourt (1787–1867)
4. Francesco Gaude (1809–1860)

1. Mykhajlo Levitsky (1774–1858)
2. Juraj Haulik (1788–1869)
3. Alessandro Barnabò (1801–1874)
4. Gaspare Grassellini (1796–1875)
5. Francesco de' Medici di Ottaiano (1808–1857)

1. Cirilo de Alameda y Brea (1781–1872)
2. Antonio Benedetto Antonucci (1798–1879)
3. Manuel Joaquín Tarancón y Morón (1782–1862)
4. Enrico Orfei (1800–1870)
5. Giuseppe Milesi Pironi Ferretti (1817–1873)
6. Pietro de Silvestri (1803–1875)
7. Teodolfo Mertel (1806–1899)

1. Manuel Bento Rodrigues da Silva (1800–1869)

1. Alexis Billiet (1783–1873)
2. Carlo Sacconi (1808–1889)
3. Miguel García Cuesta (1803–1873)
4. Gaetano Bedini (1806–1864)
5. Fernando de la Puente y Primo de Rivera (1808–1867)
6. Angelo Quaglia (1802–1872)
7. Antonio Maria Panebianco (1808–1885)

1. Giuseppe Luigi Trevisanato (1801–1877)
2. Antonio Saverio De Luca (1805–1883)
3. Giuseppe Andrea Bizzarri (1802–1877)
4. Luis de la Lastra y Cuesta (1803–1876)
5. Jean Baptiste François Pitra (1812–1889)
6. Filippo Maria Guidi (1815–1879)
7. Francesco Pentini (1797–1869)

1. Henri-Marie-Gaston Boisnormand de Bonnechose (1800–1883)

1. Paul Cullen (1803–1878)
2. Gustav Adolf Hohenlohe (1823–1896)
3. Luigi Bilio (1826–1884)
4. Antonio Matteucci (1802–1866)
5. Domenico Consolini (1806–1884)

1. Lucien Louis Joseph Napoleon Bonaparte (1828–1895)
2. Innocenzo Ferrieri (1810–1887)
3. Matteo Eustachio Gonella (1811–1870)
4. Lorenzo Barili (1801–1875)
5. Giuseppe Berardi (1810–1878)
6. Juan de la Cruz Ignacio Moreno y Maisonave (1817–1884)
7. Raffaele Monaco La Valletta (1827–1896)
8. Edoardo Borromeo (1822–1881)
9. Annibale Capalti (1811–1877)

1. Inácio do Nascimento de Morais Cardoso (1811–1883)
2. René-François Régnier (1794–1881)
3. Maximilian Joseph von Tarnóczy (1806–1876)
4. Flavio Chigi (1810–1885)
5. Alessandro Franchi (1819–1878)
6. Joseph-Hippolyte Guibert (1802–1886)
7. Mariano Falcinelli Antoniacci (1806–1874)
8. Mariano Benito Barrio y Fernández (1805–1876)
9. Luigi Oreglia di Santo Stefano (1828–1913)
10. János Simor (1813–1891)
11. Camillo Tarquini (1810–1874)
12. Tommaso Martinelli (1827–1888)

Pius created eleven cardinals in his March 1875 consistory, reserving the names of five of them in pectore.^[2]

1. Ruggero Luigi Emidio Antici Mattei (1811–1883)
2. Pietro Gianelli (1807–1881)
3. Mieczysław Halka Ledóchowski (1822–1902)
4. John McCloskey (1810–1885)
5. Henry Edward Manning (1808–1892)
6. Victor-Auguste-Isidor Deschamps (1810–1883)
7. Salvatore Nobili Vitelleschi (1818–1875)
8. Giovanni Simeoni (1816–1892)
9. Domenico Bartolini (1813–1887)
10. Lorenzo Ilarione Randi (1818–1887)
11. Bartolomeo Pacca, iuniore (1817–1880)

1. Godefroy Brossais-Saint-Marc (1803–1878)

1. Bartolomeo D’Avanzo (1811–1884)
2. Johannes Baptist Franzelin (1816–1886)

1. Francisco de Paula Benavides y Navarrete (1810–1895)
2. Francesco Saverio Apuzzo (1807–1880)
3. Manuel García Gil (1802–1881)
4. Edward Henry Howard (1829–1892)
5. Miguel Payá y Rico (1811–1891)
6. Louis-Marie Caverot (1806–1887)
7. Luigi di Canossa (1809–1900)
8. Luigi Serafini (1808–1894)
9. Lorenzo Nina (1812–1885)
10. Enea Sbarretti (1808–1884)
11. Frédéric de Falloux du Coudray (1815–1884)

1. Josip Mihalovic (1814–1891)
2. Johann Rudolf Kutschker (1810–1881)
3. Lucido Parocchi (1833–1903)

1. Vincenzo Moretti (1815–1881)
2. Antonio Pellegrini (1812–1887)

• Martin, Frederick, ed. (1876). "Church of Rome". The Statesman's Yearbook. Macmillan and Co.: 301ff. Retrieved 23 July 2018. On December 1, 1875.... The following list gives the names of these fifty-seven cardinals, together with their office, or dignity, if any, their nationality, year of birth, and year of nomination....
• Miranda, Salvador. "Consistories for the creation of Cardinals 19th Century (1800-1903): Pius IX". The Cardinals of the Holy Roman Church. Florida International University. OCLC 53276621.