| AR | Augustinian Recollect Sisters | |
| ASC | Sisters Adorers of the Blood of Christ | Croatian Sisters |
| CFC | Congregation of Christian Brothers | Christian Brothers |
| CHA | Congregation of the Sisters of the Holy Angels | Holy Angels |
| CHF | Congregation of the Sisters of the Holy Faith | Holy Faith Sisters |
| CLMM | Congregation of Lebanese Maronite Missionaries | Maronite Missionaries |
| CM | The Congregation of the Mission | Vincentians |
| CMF | Cordis Mariae Filius ("Sons of the Immaculate Heart of Mary") | Claretian Missionaries |
| CMR | Missionary Sisters of the Blessed Virgin Mary, Queen of the World | |
| CP | Congregation of the Passion of Jesus Christ | Passionists |
| CR | Congregation of the Resurrection | Resurrection Fathers |
| CR | Congregation of the Sisters of the Resurrection (of Our Lord Christ) | Resurrection Sisters |
| CS | Scalabrinian Congregation | Scalabrinian Fathers |
| CSFN | Sisters of the Holy Family of Nazareth | |
| CSJP | Congregation of the Sisters of St Joseph of Peace | |
| CSSp | Congregation of the Holy Spirit and the Immaculate Heart of Mary | Holy Ghost Fathers |
| CSsR | Congregation of the Most Holy Redeemer | Redemptorists |
| DC | Daughters of Charity of St Vincent de Paul | Daughters of Charity |
| DOLC | Daughters of Our Lady of Compassion | |
| FCJ | Faithful Companions of Jesus | FCJ Sisters |
| FDCC | Canossian Daughters of Charity | Canossian Sisters |
| FDNSC | Daughters of Our Lady of the Sacred Heart | OLSH Sisters |
| FDZ | Daughters of Divine Zeal | |
| FMA | Daughters of Mary Help of Christians | Salesian Sisters |
| FMDM | Franciscan Missionaries of the Divine Motherhood | |
| FMM | Franciscan Missionaries of Mary | |
| FSCJ | Franciscan Sisters of the Heart of Jesus | |
| FSP | Congregation of the Brothers of St Patrick | Patrician Brothers |
| FSP | Daughters of St Paul | |
| FSSA | Congregation of Sisters of St Anthony | Franciscan Sisters of St Anthony |
| IBVM | Institute of the Blessed Virgin Mary | Loreto Sisters |
| IC | Institute of Charity | Rosminians |
| LCM | Little Company of Mary | |
| LSJ | Little Sisters of Jesus (of Charles de Foucauld) | |
| LSP | Little Sisters of the Poor | |
| MAfr | Missionaries of Africa | White Fathers |
| MC | Missionaries of Charity Nuns | |
| MFIC | Missionary Franciscan Sisters of the Immaculate Conception | Franciscan Missionary Sisters |
| MHM | Mill Hill Missionaries | |
| MIM | Congregation of Marian Fathers | |
| MSC | Society of the Missionaries of the Sacred Heart | |
| MSC | Missionary Sisters of the Sacred Heart of Jesus | Cabrini Sisters |
| MSHF | Maronite Sisters of the Holy Family | |
| MSS | Missionary Sisters of Service | |
| MSSP | Missionary Society of St Paul | Paulists |
| NDS | Our Lady of Sion Sisters | Sion Sisters |
| OCarm | Order of Brothers of the Most Blessed Virgin Mary of Mt Carmel | |
| OCD | Discalced Nuns of the Order of the Blessed Virgin Mary of Mt Carmel | Discalced Carmelite Nuns |
| OCDS | Carmelite Secular Order | |
| OCist | Cistercians of the Common Observance | Cistercians |
| OCSO | Cistercians of the Strict Observance | Trappists |
| OFM Cap | Order of Friars Minor Capuchin | Capuchins |
| OFM Conv | Order of Friars Minor Conventual | Conventuals |
| OH | Hospitaller Order of St John of God | Brothers of St John of God |
| OHF | Missionary Sisters Oblates of the Holy Family | Holy Family Sisters |
| OLHC | Congregation of the Sisters of Our Lady Help of Christians | |
| OLM | Order of Lebanese Maronites | Maronite Monks |
| OLN | Our Lady's Nurses for the Poor | |
| OMI | Congregation of the Missionary Oblates of the Most Holy and Immaculate Virgin Mary | |
| OMSC | Ursuline Missionaries of the Sacred Heart | Ursuline Sisters |
| OP | Order of Preachers | Dominicans Monks & Nuns |
| OPraem | Canons Regular of Prémontré | Norbertine Canons |
| OSA | Order of St Augustine | Augustinians |
| OSA | Augustinian Sisters Servants of Jesus and Mary | Augustinian Sisters |
| OSB | Order of St Benedict | Benedictine Monks |
| OSB | Order of St Benedict | Benedictine Nuns |
| OSBM | Sisters of the Order of St Basil the Great | Basilian Nuns |
| OSC | Order of St Clare | Poor Clares |
| OSCam | Order of St Camillus | |
| OSM | Order of Servants of Mary | Servite Friars |
| OSM | Order of Servants of Mary | Servite Sisters |
| OSP | Order of St Paul the Hermit | Pauline Fathers |
| OSsR | Order of the Most Holy Redeemer (Fully Contemplative Nuns) | Redemptoristines |
| OSU | Ursulines of the Roman Union | |
| PBVM | Congregation of the Presentation of the Blessed Virgin Mary | Presentation Sisters |
| PDDM | Disciples of the Divine Master Sisters | |
| PSMG | Poor Servants of the Mother of God | |
| PSN | Congregation of the Poor Sisters of Nazareth | Sisters of Nazareth |
| RGS | Our Lady of Charity of the Good Shepherd | Good Shepherd Sisters |
| RJM | Religious of Jesus and Mary | |
| RLR | Congregation of La Retraite | La Retraite Sisters |
| RNDM | Sisters of Our Lady of the Missions (Religieuses de Notre Dame des Missions) | |
| RPA | Sisters of Perpetual Adoration of the Blessed Sacrament | Adoration Sisters |
| RSC | Congregation of the Religious Sisters of Charity | Sisters of Charity |
| RSCJ | Society of the Sacred Heart | |
| RSJ | Sisters of St Joseph of the Sacred Heart | Sisters of St Joseph |
| RSM | Sisters of Mercy | Mercy Union |
| SC | Society of the Catholic Apostolates | Pallottines |
| SChr | Society of Christ | |
| SDS | Society of the Divine Saviour | Salvatorian Fathers |
| SGS | Institute of the Sisters of the Good Samaritan of the Order of St Benedict | Good Samaritan Sisters |
| SHCJ | Society of the Holy Child Jesus | |
| SJ | The Society of Jesus | Jesuits |
| SJA | Sisters of Joseph of the Apparition | |
| SJC | Missionary Sisters of St Joseph of Cluny | Cluny Sisters |
| SJG | Sisters of St John of God | |
| SJGS | Sisters of Jesus Good Shepherd | Pastorelle Sisters |
| SM | Society of Mary | Marists Brothers and Sisters |
| SMSM | Missionary Sisters of the Society of Mary | Marist Missionary Sisters |
| SPC | Sisters of St Paul of Chartres | |
| SSJA | Sisters of Saint Joseph of Annecy | |
| SSMI | Sisters Servants of Mary Immaculate | |
| SSMN | Sisters of Saint Mary of Namur | |
| SSP | Society of St Paul | |
| SSPC | Missionary Sisters of St Peter Claver | |
| SSpS | Missionary Sisters, Servants of the Holy Spirit | Holy Spirit Sisters |
| SSS | Fathers of the Blessed Sacrament | Blessed Sacrament Fathers |
| SSS | Sisters of the Blessed Sacrament | Blessed Sacrament Sisters |