St John's is a member of the Cambridge South Deanery. This comprises the parishes of:
Cambridge St Barnabas
Cambridge St Benedict
Cambridge St Botolph
Cambridge St Edward
Cambridge Holy Trinity
Cambridge St James
Cambridge St Mark
Cambridge St Martin
Cambridge St Mary the Less
Cambridge St Paul
Cambridge St Philip (St Stephen)
Cherry Hinton St Andrew
Cherry Hinton St John the Evangelist
Grantchester St Andrew and St Mary
Trumpington St Mary and St Michael
The Rural Dean is Fr Robert Mackley, vicar of St Mary the Less. There have been several ministry changes over the last couple of years and currently Cambridge St Mark and Grantchester share the same priest in charge, Rev Rachel Rosborough.