St Mary MacKillop College has a strong connection to Our Lady of the Bay Catholic Church in Kelly Drive and to the parish priest, who celebrates with the College for Mass, liturgies and sacramental programs.

Weekend Mass Times for Busselton

St Joseph's Church (Kent Street) - Saturday 6pm

Our Lady of the Bay Church - Sunday 9am and 6pm

The College community is also linked to the Catholic parishes of Busselton, Dunsborough, and Margaret River and the local Catholic Women’s League.

Our College is within the Bunbury Diocese.

On Friday, 30 June 2023, the Holy See announced that Pope Francis has accepted the resignation of Bishop Gerard Holohan as the Bishop of Bunbury. Bishop Holohan had offered his resignation to the Pope when he turned 75 in September last year, as he was required to do by Canon Law. Some nine months later, the Pope has accepted the bishop’s resignation.

In order to make provision for the needs of the diocese of Bunbury while the process of consultation prior to the appointment of a new Bishop takes place, the Pope has appointed Archbishop Tim Costelloe SDB as the Apostolic Administrator of the diocese of Bunbury. Both the retirement of Bishop Holohan and the appointment of Archbishop Costelloe are effective immediately.

Link to Busselton Parish website

Link to Dunsborough Parish website

Link to Margaret River Parish website

Link to Biography Archbishop Timothy Costelloe SDB