Iona Preparatory School, or simply Iona Prep, is an independent, Catholic, all-male, college-preparatory school located in the north end of New Rochelle, New York, in suburban Westchester County. It consists of the Upper School for Grades 9 through 12 and the Lower School for kindergarten to grade 8. The primary and secondary schools are located on separate and nearby campuses less than a mile apart on Stratton Road. It is a privately-owned independent school without parochial affiliation and is located within the Archdiocese of New York. The school was named for the Scottish island of Iona and was founded in 1916 by the Congregation of Christian Brothers.

John P. Donohue was an American physician. He was the Chairman of the Urology Department and Distinguished Professor Emeritus at Indiana University School of Medicine. He pioneered treatments for testicular cancer, including the nerve-sparing technique. His work with Dr. Lawrence Einhorn led to an increase in cure rate of testicular cancer from 5% to 90%. He studied under Wyland F. Leadbetter. He began his career as a United States Navy officer while serving as the ship's surgeon aboard the aircraft carrier USS Wasp.