| Jurisdiction: | Archdiocese |
| Košice | |
| Latin: | Archidioecesis Cassoviensis |
| Local: | Košická arcidiecéza |
| Coat: | Košická arcidiecéza.svg |
| Coat Size: | 200px |
| Coat Caption: | Archdiocese of Košice Coat of Arms |
| Country: |  Slovakia |
| Province: | Košice |
| Archdeaconries: | 3 (Abov - Cathedral, Šariš, Zemplín |
| Deaneries: | 20 |
| Area Km2: | 10,403 |
| Population: | 1,153,008 |
| Population As Of: | 2020[1] |
| Catholics: | 522,008 |
| Catholics Percent: | 45.3 |
| Parishes: | 216 |
| Churches: | 592 |
| Schools: | 39 |
| Denomination: | Roman Catholic |
| Particular Church: | Latin Church |
| Rite: | Latin Rite |
| Established: | 10 August 1804 (As Diocese of Košice) 31 March 1995 (As Archdiocese of Košice) |
| Cathedral: | Cathedral of St. Elizabeth in Košice |
| Cocathedral: | Saint Nicholas Concathedral |
| Patron: | Andrew the Apostle |
| Priests: | 430 |
| Bishop Title: | Archbishop-Metropolitan |
| Metro Archbishop: | Bernard Bober |
| Suffragans: | Diocese of Rožňava, Diocese of Spiš |
| Episcopal Vicar: | Zoltán Pásztor, Vladimír Šosták |
| Archdeacon: | for one--> |
| Map: | Slovacchia - Arcidiocesi di Kosice.png |
| Map Size: | 250px |
| Website: | Website |
The Archdiocese of Košice (Slovak: Košická arcidiecéza, Latin: Archidioecesis Cassoviensis) is a Latin archdiocese of the Catholic Church in eastern Slovakia, with its seat in Košice. It covers the central and eastern parts of the Prešov and Košice regions, with an area of 10,403 km2. The diocese's area has a total population of 1,153,505 people, of which around 61% were of Catholic faith as of 2012. The Cathedral of St. Elizabeth serves as the seat of the diocese.
The current Archbishop, Bernard Bober was appointed on June 4, 2010, and canonically took power of the archdiocese on July 10, 2010. He had formerly served as auxiliary bishop under Alojz Tkáč. On June 11, 2016, priest Marek Forgáč was appointed as the new auxiliary bishop by Pope Francis.
It was first created in 1804 under name Diocese of Košice as a suffragan to the Archdiocese of Eger. In 1977, the metropolitan was changed to the newly established ecclesiastical province of Trnava. On 31 March 1995, a new ecclesiastical province was created, changing the status of the diocese into archdiocese with the suffragans of Spiš and Rožňava.
St Charles Borromeo Seminary, the diocese's main seminary, was founded in 1994.