Cardinals created by Gregory IX

Pope Gregory IX (r. 1227–1241) created sixteen cardinals in five consistories that he held throughout his pontificate. This included three future successors (Celestine IV, Innocent IV, and Alexander IV) in the first allocation in 1227.

18 September 1227

 * Jean Halgrin O.S.B. Clun.
 * Goffredo Castiglioni
 * Rinaldo Conti di Segni
 * Sinibaldo Fieschi
 * Barthélemy
 * Otto of Tonengo

December 1228

 * Jacques de Vitry Can. Reg. O.S.A.
 * Niccolò Conti di Segni

September 1231

 * Giacomo da Pecorara O.Cist.
 * Simon de Sully
 * Raymond de Pons

1237

 * Riccardo Annibaldi
 * François Cassard
 * Guy

1239

 * Robert Somercotes
 * St. Ramón Nonato O. de M.