It was constituted in November 1955, in Surabaya as the Supreme Council of Indonesian Bishops (MAWI/Majelis Agung Waligereja Indonesia).

Inside this organization they work to negotiate and decide something about Catholics across the country.

Although some areas since 1902 has been separated from the Apostolic Vicariate of Batavia (1902: Maluku - Irian Jaya, 1905: Borneo, 1911: Sumatra, 1913/1914: Nusa Tenggara, and 1919: Sulawesi), but recognition of the Dutch colonial government to the many Catholic Church leaders in the archipelago just happened in 1913.

Then all Vicar Apostolic Prefect feel that it was necessary to negotiate together to achieve unity in the government attitude towards many issues, but especially relating to freedom for the mission to enter all areas and is also associated with the position of Catholic education.

On September 15 - May 16, 1924 was held the first meeting of Bishops of Nusantara in Jakarta Cathedral.

Van Velsen and was attended by the bishops mentioned above plus the two pastors : AHG Brocker, M.S.C.

The second hearing was held on August 31 to September 6, 1925, also in Jakarta, under the leadership of Pope Pius X a messenger named Mgr.

(Bishop Purwokerto) subsequently approved by Internuncio in Jakarta on January 31, 1955.

In addition to the plenary session, it was decided to set up a small meeting that remains, to carry out daily tasks, which is called the Central Indonesian Bishops' Council, abbreviated DEWAP, which is chaired by Mgr.

So rapid development of Indonesian Catholic congregation, so that in a meeting in Girisonta, Ungaran, Central Java (9 to 16 May 1960) Indonesian bishops wrote a letter to Pope John XXIII, pleading for him to officially inaugurate the establishment of the Church hierarchy in Indonesia.

Then by decree " Quod Christus Adorandus " dated January 3, 1961 Pope John XXIII inaugurated the establishment of the Church hierarchy in Indonesia.

In the General Secretariat assembled all officials who helped facilitate the work of the Indonesian bishops' pastoral.

[1] On 15 May 2024, the newly renovated KWI building located in Cut Mutia St., Menteng, Jakarta was consecrated.

Antonius Subianto Bunyamin, OSC Vice President : Mgr.

Adrianus Sunarko, OFM Vice President II : Mgr.

(Manado) Christophorus Tri Harsono (Purwokerto) Dominikus Saku (Atambua) Edmund Woga, C.SS.R.

(Malang) Hilarion Datus Lega (Manokwari–Sorong) Hironimus Pakaenoni (Kupang) Ignatius Kardinal Suharyo Hardjoatmodjo (Jakarta & Military Ordinariate Indonesia) Johannes Liku Ada' (Makassar) Kornelius Sipayung, O.F.M.

(Medan) Maksimus Regus (Labuan Bajo) Paskalis Bruno Syukur, O.F.M.

(Merauke) Pius Riana Prapdi (Ketapang) Robertus Rubiyatmoko (Semarang) Samuel Oton Sidin, O.F.M.

(Sintang) Seno Ngutra (Amboina) Silvester Tung Kiem San (Denpasar) Siprianus Hormat (Ruteng) Valentinus Saeng, C.P.

(Banjarmasin) Vinsensius Setiawan Triatmojo (Tanjungkarang) Vitus Rubianto Solichin, S.X.

(Padang) Yanuarius Teofilus Matopai You (Jayapura) Yohanes Harun Yuwono (Palembang) Yustinus Harjosusanto, M.S.F.