Short Critical Study of the Novus Ordo Missae, nicknamed Ottaviani Intervention, is a 1969 document written by some Roman Catholic theologians addressed to Pope Paul VI to criticise what those theologians perceived as problems in the Mass of Paul VI — also called "Novus Ordo Missae" —, Mass which had been promulgated earlier the same year. The surname of the document comes from one of its writers, Alfredo Ottaviani.

Alfredo Ottaviani was an Italian cardinal of the Catholic Church. Pope Pius XII named him cardinal in 1953. He served as secretary of the Holy Office in the Roman Curia from 1959 to 1966 when that dicastery was reorganised as the Congregation for the Doctrine of the Faith, of which he was pro-prefect until 1968.