Efraim Basilio Krevey, O.S.B.M. (born on 12 December 1928 in Saltinho colony, Ivaí, Paraná (state), Brazil - died on 3 April 2012, Curitiba, Brazil) was the Ukrainian Greek Catholic bishop of the Ukrainian Catholic Eparchy of São João Batista em Curitiba, Brazil.
Ordained to the priesthood in 1951, Krevey became a bishop in 1971 retiring in 2006.
Efraím Krevey finished primary school in his native Saltino. In 1940 he entered the Minor Seminary of Saint Joseph (Basilian Fathers) in Prudentópolis (Parana state). In January 1943, he entered the novitiate of the Basilian Fathers in Prudentopolis. In 1945 Krevey moved to Irasemu, where he received humanitarian and philosophical education. At the end of 1948 began his theological studies at the Gregorian University in Rome and received a bachelor's degree and a licentiate.
On January 1, 1950 Krevey amounted his perpetual vows in Rome in the Church of Saints Sergius and Bacchus. Efraím Krevey was ordained on 4 March 1951 at the College of Saint Josaphat martyr at Rome. He was ordained a Deacon March 25, 1951 in Rome, and priest on 12 November 1951 in the Church of Saints Sergius and Bacchus in Rome.
From August 1952 to 1955 Krevey was assistant at Saint Josaphat martyr church in Prudentopolis and Vice -Rector and Professor of Minor Seminary of Saint Joseph. From 1955 to 1959 he was Rector and Professor of the same Minor Seminary. From 1959 to 1969 Krevey was abbot of the monastery and the parish of Saint Josaphat martyr in Prudentopolis. In 1961 was Master novitiate of the Sisters Servants of the Catechists and the Heart of Jesus. In 1965 was elected Brazilian consultor of Province of Saint Joseph. In 1969 Krevey took part in the General Chapter of Basilian Fathers in Rome. In the same year was appointed abbot of the monastery of Basilian Fathers studio in Curitiba, and in 1970 he was elected Provincial Superior Province of Saint Joseph the Basilian Fathers in Brazil.
On 29 November 1971 he was nominated bishop coadjutor Bishop of the Ukrainian Greek Eparchy of São João Batista em Curitiba with right of succession. On February 13, 1972 Pope Paul VI in Saint Peter's Basilica in Rome gave him episcopal consecration. In March, returned to Brazil and begins his pastoral ministry with Bishop José Romão Martenetz. In May 1978, due to the fact that Bishop Joseph resigned, Martenetz taking over leadership of the diocese.