The Diocese of Southwark(Br ) is one of the 44 dioceses of the Church of England, part of the worldwide Anglican Communion. The diocese forms part of the Province of Canterbury in England. It was created on 1 May 1905 from part of the Diocese of Rochester. Prior to 1877 the area was part of the Diocese of Winchester.
The diocese covers Greater London south of the River Thames (except for Bexley and Bromley) and covers east Surrey. It is divided into three episcopal areas each of which contains two archdeaconries:
- Croydon Episcopal Area (overseen by the Bishop of Croydon)
- Archdeaconry of Croydon
- includes Deaneries of Croydon Addington, Croydon Central, Croydon North, Croydon South, and Sutton
- Archdeaconry of Reigate
- includes Deaneries of Caterham, Godstone, and Reigate
- Archdeaconry of Croydon
- Kingston Episcopal Area (overseen by the Bishop of Kingston)
- Archdeaconry of Lambeth
- includes Deaneries of Brixton, Clapham, Lambeth North, Lambeth South, Streatham, and Merton
- Archdeaconry of Wandsworth
- includes Deaneries of Battersea, Kingston, Richmond and Barnes, Tooting, and Wandsworth
- Archdeaconry of Lambeth
- Woolwich Episcopal Area (overseen by the Bishop of Woolwich)
- Archdeaconry of Lewisham & Greenwich
- includes Deaneries of Charlton, Deptford, East Lewisham, Eltham and Mottingham, Plumstead, and West Lewisham
- Archdeaconry of Southwark
- includes Deaneries of Bermondsey, Camberwell, Dulwich, and Southwark and Newington
- Archdeaconry of Lewisham & Greenwich