Carlo Caccia Dominioni (1802–1866) was an Italian prelate, who become auxiliary bishop of Milan.
In 1859 archbishop Romilli died and the chapter of the cathedral named Caccia Dominioni as diocesan administrator during the vacancy of the see.
For the succession to archbishop Romilli, Caccia Dominioni was one of the candidates but pope Pius IX chose with the advice of Austrian Emperator the more conservative Paolo Angelo Ballerini the vicar of archbishop Romilli.
The events of the years 1859 and 1860 stiffened Caccia Dominioni who refused to celebrate a Te Deum for the birth of Italy, in reaction for this decision many clergy of the archdiocese together with many lay people forced Caccia Dominioni to escape in his family residence in Cornate d'Adda and later in Monza.
He was later deported to Turin and sentenced by the Italian authorities to spend time in jail that he never served, and he wasn't allowed to come back to Milan.