|The Rt Revd
|Bishop of Southwark|
|Diocese||Anglican Diocese of Southwark|
|In office||14 December 1980–1991|
|Other posts||Honorary assistant bishop in Worcester (1991–present)
Bishop of Newcastle
|Consecration||6 January 1973|
|Born||16 August 1926|
|Alma mater||Trinity College, Oxford|
Ronald Oliver Bowlby(born 16 August 1926), also known as Ronnie Bowlby, is a British Anglican bishop. He was the ninth Bishop of Newcastle from 1973 until 1980. He was then translated to Southwark where he served until his retirement eleven years later in 1991.
Early life and education
Bowlby's first post after ordination was as a curate at St Luke's, Pallion, Sunderland 1952-1956. He was then Priest in charge of St Aidan, Billingham (1956-1966) and Vicar of Croydon (1966-1972) before his elevation to the Episcopate.
Bowlby was nominated to Newcastle on 27 November 1972 and consecrated 6 January 1973. He translated to Southwark on 14 December 1980.
His interest is in housing matters and he served as President of the National Federation of Housing Associations from 1984 to 1988 and of the Churches' National Housing Coalition from 1991 to 1994. 
- Birmingham Post – Give us this day our new daily prayer
- "Debrett's People of Today 1992" (London, Debrett's) ISBN 1-870520-09-2)
- The Times, Wednesday, Feb 07, 1973; pg. 18; Issue 58701; col A Court Circular
- Stockwood successor is appointed The Times Wednesday, Jul 23, 1980; pg. 16; Issue 60684; col D
- "Who's Who 1992 "(London, A & C Black ISBN 0-7136-3514-2)
- Crockford's clerical directory London, Church House 1975 ISBN 0-19-200008-X
- Who's Who, 2013. p. 247. ISBN 978-1-408-15491-5.
- Who's Who, 2013.Address given as 4 Uppington Avenue, Shrewsbury.