| Type: | Cardinal |
| Honorific Prefix: | His Eminence |
| Luigi Trombetta | |
| Secretary of the Congregation of Bishops and Regulars | |
| Church: | Roman Catholic Church |
| Appointed: | 24 December 1896 |
| Term End: | 17 January 1900 |
| Predecessor: | Luigi Sepiacci |
| Other Post: | Cardinal-Deacon of Sant'Eustachio (1899-1900) |
| Ordination: | March 1844 |
| Cardinal: | 19 June 1899 |
| Created Cardinal By: | Pope Leo XIII |
| Rank: | Cardinal-Deacon |
| Birth Name: | Luigi Trombetta |
| Birth Date: | 3 February 1820 |
| Birth Place: | Città Lavinia, Papal States |
| Death Place: | Palazzo Morosini, Rome, Kingdom of Italy |
| Buried: | Campo Verano |
| Parents: | Giovanni Trombetta Dorotea di Pietro |
Luigi Trombetta (3 February 1820 – 17 January 1900) was an Italian cardinal.[1]
He was ordained as a priest in March 1844. He received his doctorate in utroque iure (both canon and civil law). He was made a canon of the chapter of the Patriarchal Basilica of Liberia, and in May 1877 he was appointed Apostolic Protonotary. In February 1863 he became undersecretary of the Congregation for Bishops and Regulars; by December 1896 he was secretary of this congregation.
In June 1899 he was created Cardinal of Sant'Eustachio by Pope Leo XIII; he died six months later and was buried in the Campo Verano cemetery in Rome.