| Jurisdiction: | Diocese |
| Ciudad del Este | |
| Latin: | Dioecesis Urbis Orientalis |
| Country: |  Paraguay |
| Sui Iuris Church: | Latin Church |
| Rite: | Roman Rite |
| Cathedral: | Catedral San Blas |
| Area Km2: | 27,451 |
| Population: | 600,100 |
| Population As Of: | 2004 |
| Catholics: | 500,000 |
| Catholics Percent: | 83,3 |
| Bishop: | Heinz Wilhelm (Guillermo) Steckling, O.M.I. |
| Map: | Alto Parana in Paraguay.svg |
The Roman Catholic Diocese of Ciudad del Este (Latin: Dioecesis Urbis Orientalis) is a diocese of the Roman Catholic Church based in the city of Ciudad del Este, in the Ecclesiastical Province of Asunción in Paraguay.
On March 25, 1968, the Territorial Prelature of Alto Paraná was established from the Territorial Prelature of Encarnación y Alto Paraná.
On July 10, 1993, the territorial prelature was established as the Diocese of Alto Paraná.
On February 3, 2001, the diocese as renamed as the Diocese of Ciudad del Este.
On February 10, 2024, the diocese lost territory to form the Diocese of Canindeyú.[1]
In 2014, Pope Francis dismissed the diocese's bishop, Rogelio Ricardo Livieres Plano, due to Livieres's alleged promotion of a diocesan priest who had been accused of the sexual abuse of a minor while serving in the United States.[2] Livieres was then barred from presiding at public celebrations of the Mass. Since then, accusations of major financial mismanagement of the finances of the diocese by Livieres have also surfaced, with the diocese reportedly close to a million United States dollars in debt.[3]