The Holy Spirit Seminary is a community and an educational institution that was founded by the Roman Catholic Church in Papua New Guinea in Kap on 1 March 1963. In January 1968 the seminary was transferred to Bomana, 12 kilometres from the capital of the country, Port Moresby.

The purpose of the Holy Spirit Seminary is the education, formation, and preparation of young men from all dioceses of Papua New Guinea for the Roman Catholic Priesthood. According to the teachings of the Catholic Church, there are four aspects of the formation: human, spiritual, pastoral and intellectual. The intellectual education is divided into two aspects: philosophy and religious study, and theological study.

The seminarians are under the authority of the rector (nominated by the Congregation of the Evangelization of Peoples) and formators, his collaborators. The seminary is supervised by a Governing Council: the chairperson – Abp. Sir John Card. Ribat MSC, Bp. Don Lippert OFM Cap., Bp. Rolando Santos CM, Fr. Marcin Wrobel CM, Fr. Joseph Vnuk OP, Fr. Jacek Tendej CM.