Joaquín Sáenz y Arriaga (12 October 1899 – 28 April 1976) was a Mexican Catholic priest and theologian sedevacantist.

[1][2][3][4] In response to Sáenz's excommunication, Father Moisés Carmona, Sáenz's associate and disciple, wrote: They excommunicated you for your fidelity to Christ, His teachings and His Church.

[a]In the 1970s, Sáenz, together with Carmona and Father Adolfo Zamora, founded the Unión Católica Trento (Tridentine Catholic Union).

[6] In his last testament, written on 25 April 1976, Sáenz wrote: My life and all that is most precious to me I have sacrificed for Christ, for the Church, and for the Papacy [...].

[b]and he added: May the last cry of my soul be that of our Mexican martyrs: Long live Christ the King, Long live the Virgin of Guadalupe!