Khosrow "Joe" Hadi Youssefi (July 28, 1943 – August 27, 2018) was an Iranian-American aerospace engineer and philatelist. He left Iran at the age of 17 to study and subsequently acquired two degrees in engineering from the University of Nebraska–Lincoln. He spent the rest of his life in the United States working at Sperry Flight Systems (later Honeywell) until his retirement in 2001. His hobby was philately in which he formed award-winning collections of the stamps of Persia and Iran.