The Diocese of East Anglia (Latin: Dioecesis Angliae Orientalis) is a Latin diocese of the Catholic Church covering the counties of Cambridgeshire, Norfolk, Suffolk, and Peterborough in eastern England. The diocese makes up part of the Catholic Association Pilgrimage.

There are 85,309 members of the church, who belong to the 50 parishes in the diocese. The patrons of the diocese are Our Lady of Walsingham (24 September), St Felix (8 March), and St Edmund (20 November).

The diocese is divided into seven deaneries, which are in turn divided into 50 parishes. Note that the list below is not exhaustive, and includes only notable parishes.

parish name	church	location	web	founded	building
St Edmund	St Edmund King & Martyr, Bury St Edmunds	Bury St Edmunds, Suffolk	[1]	1763	1837

Masses are also said at RAF Lakenheath, at Clare Priory, at the Monastery of Our Lady of Mount Carmel in Quidenham, at the care home of the Sisters of Our Lady of Grace and Compassion in Great Barton, and in the villages of Cavendish and Woolpit.

parish name	church	location	web	founded	building
Our Lady & the English Martyrs	Our Lady of the Assumption & the English Martyrs, Cambridge	Cambridge, Cambridgeshire	[2]	c. 1841	1890
St Laurence	St Laurence, Cambridge	Cambridge, Cambridgeshire	[3]	early C20th	1958
St Etheldreda	St Etheldreda, Ely	Ely, Cambridgeshire	[4]	c. 1890	1903
Sacred Heart	Sacred Heart, St Ives	St Ives, Cambridgeshire	[5]	late C19th	1902

Masses are also said at RAF Alconbury, at Blackfriars, the Dominican Priory of St Michael, Cambridge, at Fisher House University Chaplaincy, and in the villages of Bar Hill and Papworth Everard.

parish name	church	location	web	founded	building
Great Yarmouth	St Mary, Great Yarmouth	Great Yarmouth, Norfolk	[6]	1824	1850

No longer listed on diocesan website.

• Aldeburgh with Leiston Parish
  • Our Lady & St Peter, Aldeburgh
• St James, Ipswich
• St Mark's Parish
  • St Mark, Ipswich
• St Mary's Parish
  • St Mary, Ipswich
• St Mary Magdalen, Ipswich
• St Pancras, Ipswich
• Woodbridge and Framlingham Parish
  • St Thomas of Canterbury, Woodbridge

• St Dominic, Downham Market
• Basilica of Our Lady of Walsingham
• Our Lady & St Charles Borromeo, Wisbech

• Cathedral of St John the Baptist, Norwich

• St Peter & All Souls, Peterborough
  • Ukrainian Catholic Church of St Olga, Peterborough

On 13 March 1976; 48 years ago (1976-03-13), by the decree Quod Ecumenicum, Pope Paul VI formed the Diocese of East Anglia (from the counties of Cambridge, Norfolk and Suffolk) out of the Diocese of Northampton.

On 2 June 1976, the new diocese received its first bishop, Alan Clark. Bishop Clark had previously been auxiliary bishop of Northampton and co-chairman of ARCIC (Anglican/Roman Catholic International Commission), with the cathedral being established at the former parish church of St John the Baptist, Norwich. As the first bishop of the new diocese, Bishop Clark had to set up all the necessary instruments and commissions for the diocese to operate successfully. The establishment of the Diocesan Pastoral Council in 1987 strengthened these.

The diocese continued to grow with the development of the diocesan offices and diocesan tribunal attached to Bishop's House in Poringland near Norwich. Bishop Clark led a number of Lourdes pilgrimages.

• Alan Charles Clark (appointed on 26 April 1976 – retired on 21 March 1995)
• Peter David Smith (appointed on 21 March 1995 – translated to the Archdiocese of Cardiff on 26 October 2001)
• Michael Charles Evans (appointed on 14 February 2003 – died in office on 11 July 2011)
• Alan Hopes (appointed on 11 June 2013 - resignation accepted on 11 October 2022)
• Peter Collins (appointed on 11 October 2022 and installed on 14 December 2022)

The diocese makes up part of the Catholic Association Pilgrimage.

• Buckden Towers
• Quidenham Hall
• Catholic Church in England and Wales
• List of Catholic churches in the United Kingdom

• Roman Catholic diocese of East Anglia — official website