| Type: | Bishop |
| Honorific-Prefix: | Most Reverend |
| Bernardino Caldaioli | |
| Bishop of Grosseto | |
| Church: | Catholic Church |
| Diocese: | Diocese of Grosseto |
| Term: | 1884–1907 |
| Predecessor: | Giovanni Battista Bagalà Blasini |
| Successor: | Ulisse Carlo Bascherini |
| Ordination: | 11 June 1870 |
| Consecration: | 2 March 1884 |
| Consecrated By: | Lucido Maria Parocchi |
| Birth Date: | 6 December 1847 |
| Birth Place: | Castel del Piano, Grand Duchy of Tuscany |
| Death Date: | 27 February 1907 |
| Death Place: | Grosseto, Kingdom of Italy |
Bernardino Caldaioli[1] (6 December 1847 - 27 February 1907) was a Roman Catholic prelate who served as Bishop of Grosseto (1884–1907).
Bernardino Caldaioli was born in Castel del Piano, in Mount Amiata, located east-northeast of Grosseto. He was named titular bishop of Magydus (Turkey) and coadjutor bishop of Grosseto on 9 August 1883 by Pope Leo XIII. He succeeded to the bishopric on the death of bishop Giovanni Battista Bagalà Blasini on 1 March 1884. He died on 27 February 1907 in Grosseto.[2]