Riccardo Annibaldi

Riccardo Annibaldi (1200 – October 4, 1276 ) was an Italian cardinal. A nephew of Pope Innocent III, he was also related to Popes Gregory IX and Alexander IV. Pope Gregory IX appointed him cardinal deacon of Sant'Angelo in Pescheria probably in 1238, as the first bull signed by him is dated June 25, 1238.

From 123 to 49 he was a rector (governor) of the province of Campagna e Marittima. In year 1243 he was appointed the first protector of the Augustinian order; he held this position until his death in 1276.