The Singapore Association of the Sovereign Military Hospitaller Order of Saint John of Jerusalem of Rhodes and of Malta was formed as a delegation of the Australian Association on 23 February 2003 with 11 members, and on 19 February 2006 was promulgated as the youngest and smallest of the 47 National Associations of the order.
Members are chosen from amongst prominent professionals who are strong practicing Catholics, already active for many years in missions of mercy and ministries in their respective Parishes, have sound ethical values, and are faithful to the Magisterial teachings of the Catholic Church. Every aspirant was also strongly recommended by their respective parish Priest for membership.
The Singapore Association held its first investiture on 4 November 2007, when one Dame and six Knights of Magistral Grace were invested at the Cathedral of the Good Shepherd. Today, there are 29 members, of whom four are Dames of Magistral Grace. His Grace Most Rev Msgr Nicholas Chia, DD, STL, Archbishop Emeritus of the Roman Catholic Archdiocese of Singapore, is Conventual Chaplain ad honorem of the Singapore Association.