| Native Name: | Departamento de Tarapacá |
| Conventional Long Name: | Tarapacá Department |
| Common Name: | Tarapacá Department |
| Subdivision: | Department |
| Nation: | Chile |
| Demonym: | Tarapaqueño, a |
| Capital: | Iquique |
| Today: | Chile |
| Year Start: | 1884 |
| Year End: | 1927 |
| Date Start: | 31 October |
| Date End: | 30 December |
| Era: | War of the Pacific aftermath |
| Flag: | Flag of Chile |
| Image Map Caption: | Map of Tarapacá Province (1895) |
| Stat Year1: | 1885 |
| Stat Pop1: | 33,051[1] |
| Stat Area1: | 40,000 |
| P1: | Tarapacá Department (Peru)Tarapacá Department |
| Flag P1: | Flag of Peru (1822-1825).svg |
| S1: | Iquique Department |
| Flag S1: | Flag of Chile.svg |
Tarapacá Department was a department in Tarapacá Province, Chile, from 1883 to 1928. It was ceded to Chile under the Treaty of Ancón, formerly being part of the Peruvian province of the same name.
The department was created on 31 October 1884 under the administration of the also new Tarapacá Province, both awarded to Chile under the Treaty of Ancón, along with Tacna. It was bordered to the north by the Pisagua Department, to the east by the Andes, to the south by the Antofagasta Department, and to the west by the Pacific Ocean.
| Municipaliday | Sub-delegations |
|---|---|
| Iquique Iquique | Ferrocarril |
| Aduana | |
| Santa María | |
| Cavancha | |
| Guantajaya | |
| Pozo Almonte | |
| Noria | |
| Caleta Buena Caleta Buena | Caleta Buena |
| Tarapacá | |
| Pica Pica | Salitreras del Sur |
| Guaneras | |
| Pica | |
| Guallacollo | |