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.