The Order by its membership of the International Alliance of Catholic Knights (IACK) is affiliated to:
| Knights of the Southern Cross | Australia |
| Knights of St. Virgil | Austria |
| Knights of St. Columba | England |
| Fraternal Order of SS. Peter and Paul | Gambia |
| Knights of St. Marshal | Ghana and England |
| Knights of St. Columbanus | Ireland |
| Knights of Southern Cross | New Zealand |
| Knights of St. Thomas the Apostle | Pakistan |
| Knights of Da Gama | South Africa |
| Knights of St. Gabriel | United Nations |
| Knights of St. Columbus | U.S.A, Canada, Mexico, Philippines, Guam, Saipan and Poland |
| Knights of St. Peter Claver | U.S.A and Columbia |
| Diplomatic Order of St. Gabriel | Philippines |
| Knights of St. Mulumba | Nigeria, Uganda and Cameroun |
| Knights of St. Thomas Moore | Belgium |
| L’Order Marie Rein de la Paix | Mauritius |

