Ordinatio Sacerdotalis (English: Priestly Ordination) is an ecclesiastical letter issued by Pope John Paul II on 22 May 1994 in which he discussed the Catholic Church's position requiring "the reservation of priestly ordination to men alone" and wrote that "the Church has no authority whatsoever to confer priestly ordination on women". While the document states that it was written so "that all doubt may be removed regarding a matter of great importance", it has been contested by some Catholics, as to both the substance and in the authoritative nature of its teaching. Most scholars agree it is not an infallible statement, as it does not define a teaching related to faith or morals.
Citing an earlier Vatican document, "Declaration Inter Insigniores on the question of the Admission of Women to the Ministerial Priesthood" issued by the Congregation for the Doctrine of the Faith in October 1976, Pope John Paul explains the official Roman Catholic understanding that the priesthood is a special role specially set out by Jesus when he chose twelve men out of his group of male and female followers. Pope John Paul notes that Jesus chose the Twelve after a night in prayer (cf. Lk 6:12) and that the Apostles themselves were careful in the choice of their successors. The priesthood is "specifically and intimately associated in the mission of the Incarnate Word himself."
The letter concludes with the words:
Wherefore, in order that all doubt may be removed regarding a matter of great importance, a matter which pertains to the Church's divine constitution itself, in virtue of Our ministry of confirming the brethren. We declare that the Church has no authority whatsoever to confer priestly ordination on women and that this judgment is to be definitively held by all the Church's faithful.
Ordinatio Sacerdotalis was not issued under the extraordinary papal magisterium as an ex cathedra statement, and so is not considered infallible in itself. Some consider its contents infallible under the ordinary magisterium, saying this doctrine has been held consistently by the Church. In a responsum ad dubium (reply to a doubt) explicitly approved by Pope John Paul II and dated October 1995, the Congregation for the Doctrine of the Faith issued its opinion that the teaching of Ordinatio Sacerdotalis had been "set forth infallibly by the ordinary and universal Magisterium" and accordingly was "to be held definitively, as belonging to the deposit of faith".