The Diocese of Lleida, or Diocese of Lerida (Latin: Dioecesis Ilerdensis) is a Latin Church diocese of the Catholic Church located in north-eastern Spain, in the province of Lleida, part of the autonomous community of Catalonia. The diocese forms part of the ecclesiastical province of Tarragona, and is thus suffragan to the Archdiocese of Tarragona.

The diocese of Lleida was created in the 3rd century. After the Moorish conquest of Lleida in 716 the episcopal see was moved to Roda (until 1101) and then to Barbastro (1101–1149). The city of Lleida was conquered from the Moors by the Count Ramon Berenguer IV of Barcelona in 1149, and the see was again transferred to its original seat. The Bishop's Palace is located in Rambla d'Aragó.

Lleida is one of the most populous cities in Catalonia, built on the right bank of the River Segre, about 100 miles from Barcelona. The town is oriental in appearance, and its streets are narrow and crooked. The population in 1900 was 23,683. The old Byzantine-Gothic Cathedral, of which the ruins are to be seen on the citadel, dates from 1203. During the Middle Ages the University of Lleida was famous; in 1717 it was suppressed, and united with Cervera.

The current Bishop of Lleida is Salvador Giménez Valls.

Lleida was the Roman Ilerda, or Herda. During the Punic Wars it sided with the Carthaginians; near it Hanno was defeated by Scipio in 216 BC, and Julius Cæsar defeated Pompey's forces in 49 BC.

La Canal says that the diocese was erected in 600, but others maintain it goes back to the third century, and there is mention of a St. Lycerius, or Glycerius, as Bishop of Lleida in AD 269.

In 546AD (dated to 524AD in some sources), a Council to regulate ecclesiastical discipline was called in Lerida. The Council prohibited clerics from taking up arms and shedding blood, and addressed issues of abortion, infanticide, incest, and clerical discipline. The Council also addressed a practice that had developed in the Iberian Peninsula, whereby on the death of a bishop, lower ranking clerics (and on occasions the bishops relatives) would ransack and loot the deceased bishops home. The council confirmed that the deceased bishops executors should occupy the bishops residence with guards and defend the premises. Three years later a synod at Valencia changed the protector to the nearest neighboring bishop. Clerics who were caught looting would also be excommunicated. The regulations of the Council were adopted by the General Canon Law of the Roman Catholic Church for implementation in all dioceses.

The signatures of other bishops of Lleida are attached to various councils up to the year 716, when the Moors took possession of the town, and the see was removed to Roda. An unbroken list of bishops of Lleida goes back to the year 887.

In 1101 King Pedro I of Aragon took the city of Barbastro from the Moors and transferred the see from Roda to Barbastro. The first bishop, Poncio, went to Rome to obtain the pope's permission for this transfer.

The city of Lleida was conquered from the Moors by the Count Ramon Berenguer IV of Barcelona in 1149, and the episcopal see was again transferred to its original seat.

A council in 1173 was presided over by Cardinal Giacinto Bobone, who afterwards became Pope Celestine III. A council in 1246 absolved king James I of Aragon from the sacrilege of cutting out the tongue of the Bishop of Girona.

The seminary was founded in 1722.

During the Peninsular War the French held it (1810), and in 1823 Spain once more obtained possession of it. Owing to its natural position its strategic value has always been very great, and it was strongly fortified in 1910.

The cathedral chapter prior to the Concordat of 1851 consisted of 6 dignities, 24 canons, 22 benefices, but after the concordat the number was reduced to 16 canons and 12 beneficed clerics.

In 1910 the Catholic population of the diocese was 185,000, scattered over 395 parishes and ministered to by 598 priests. Besides 395 churches for public worship, there were in the diocese five religious communities of men, six of women, and several hospitals in charge of nuns. The seminary accommodated 500 students.

In 1995, following the Ilerdensis et Barbastrensis de finum mutatione decree, 84 culturally Catalan La Franja parishes that had traditionally belonged to the Roman Catholic Diocese of Lleida for over eight centuries, were segregated and transferred to the Roman Catholic Diocese of Barbastro-Monzón. These were followed by a further 27 parishes in June 1998. The amputated parishes were in the Llitera and Baix Cinca Catalan-speaking Aragonese areas.

After the parish segregation a controversy began regarding the return of ancient works of art belonging to the segregated parishes and which were stored at the Lleida Diocesan Museum. The decree and the ensuing controversies were perceived as anti-Catalan measures by many in Lleida and in the concerned parishes, as they were not previously consulted, and part of a strategy to assimilate the La Franja people into the Spanish-speaking mainstream congregation by cutting them off from their cultural roots.

All the names (except the first one) are given in Catalan:

• Itxió 203
• Sant Filó 227
• Joan 230
• Pere 258
• Màrius Seli 259
• c. 269 : St. Lleïr — (Mentioned in 269)
• c. 516 : Oronci — (Mentioned between 516 and 517)
• c. 519 : Pere
• c. 540 : Andreu — (Mentioned in 540)
• c. 546 : Februari — (Mentioned in 546)
• c. 589 : Polibi — (Mentioned in 589)
• c. 592 : Julià — (Mentioned in 592)
• c. 599 : Ameli — (Mentioned in 599)
• c. 614 : Gomarel — (Mentioned in 614)
• c. 635 : Fructuós — (Mentioned between 633 and 638)
• c. 653 : Gandelè — (Mentioned in 653)
• c. 690 : Eusend — (Mentioned between 683 and 693)
• c. 715 : Esteve — (before 714 – after 719)
• c. 780 : San Medard — (after 778)
• c. 842 : Jacob

After the Moorish conquest the Diocese of Lleida is transferred to Roda.

After the Moorish conquest the Diocese of Lleida is transferred to Roda. All the names are given in Catalan:

In 1101 the Diocese of Roda is transferred to Barbastro.

In 1101 the Diocese of Roda is transferred to Barbastro. All the names are given in Catalan:

In 1149 the episcopal see returned to Lleida.

In 1149 the episcopal see returned to Lleida.

• La Franja
• Bishop of Lleida

• (in Spanish) IBERCRONOX: Obispado de Lérida (Ilerda) and Obispado de Barbastro-Monzón
•  This article incorporates text from a publication now in the public domain: Herbermann, Charles, ed. (1913). "Lérida". Catholic Encyclopedia. New York: Robert Appleton Company.

• Diocese of Lleida (in Catalan)

41°36′53″N 0°37′16″E / 41.6148°N 0.621094°E / 41.6148; 0.621094