As a result of our Diocesan Synod in 2016, we began to speak about our parishes and schools as constitutive parts of clusters. These clusters are centred around the eight Catholic secondary schools in the diocese.
Clusters provide the opportunity to meet, discuss and propose how to establish the synod principles of (i) the whole People of God participating in discernment and decision-making in regard to (ii) the full participation of the laity in the life and mission of the Church, and (iii) the evangelisation of our parishes.
| Cluster | Locality | Parishes |
| St Columba's | Inverclyde (West) | St Joseph's and St Patrick's; St Ninian's; St Andrew's; St Joseph's |
| Notre Dame | Inverclyde (Central) | St Mary's; St Patrick's; St Laurence's |
| St Stephen's | Inverclyde (East) | St John the Baptist's; Holy Family; St Francis'; St Colm's |
| Trinity | Renfrewshire (North) | St James'; St Columba's; St John Bosco's; St Bernadette's; Our Lady of Lourdes |
| St Benedict's | Renfrewshire (West) | St Margaret's; St Aidan's; St Fillan's; Christ the King; St Conval's |
| St Andrew's | Paisley | St Mirin's; St James'; St Charles'; St Mary's; St Fergus'; St Peter's; St Paul's |
| St Luke's | East Renfrewshire (West) |
St John the Evangelist's; St Thomas' |
| St Ninian's | East Renfrewshire (Central) |
St Joseph's; St Cadoc's; St Bridget's |