Frank Henry Greteman

Frank Henry Greteman (December 25, 1907 – March 21, 1987) was an American prelate of the Roman Catholic Church who served as bishop of the Diocese of Sioux City, Iowa from 1970 to 1983.

Frank Greteman was born in Willey, Iowa, to Bernard and Mary (née Meissner) Greteman. He graduated from Loras College in 1929 with a Bachelor of Arts degree, and continued his studies at the Pontifical North American College in Rome, earning a Licentiate of Sacred Theology in 1933. He was ordained a priest on December 8, 1932, and then served as a curate at St. Augustine Church in Spokane, Washington until 1935.

He earned a Licentiate of Canon Law from The Catholic University of America in 1937. Returning to Iowa, he was pastor of Assumption Church in Merrill (1937–1941), St. Michael Church in Sioux City (1941–1950), SS. Peter & Paul Church in Carroll (1950–1964), and Holy Spirit Church in Carroll (1964–65). He was named a Domestic Prelate in 1953, and vicar general of the Sioux City Diocese in 1965.

On April 14, 1965, Greteman was appointed Auxiliary Bishop of Sioux City and Titular Bishop of Vissalsa by Pope Paul VI. He received his episcopal consecration on the following May 26 from Archbishop Egidio Vagnozzi, with Archbishop James Joseph Byrne and Bishop Joseph Maximilian Mueller serving as co-consecrators. Following the resignation of Bishop Mueller, he was named the fourth Bishop of Sioux City on October 15, 1970. The main focus of his episcopate was Catholic education. He ordained the present Archbishop of Cincinnati, Dennis Marion Schnurr, to the presbyterate.

Upon reaching the mandatory retirement age of 75, Greteman submitted his letter of resignation to Pope John Paul II in December 1982. His resignation was accepted on August 17, 1983, and Lawrence Donald Soens was named as his successor. He died less than three years later, aged 79.