Lloyd T. "Rosy" Harr (April 14, 1896 – December 23, 1982) was an American football coach and college athletics administrator. He served as the head football coach at the College of Emporia in Emporia, Kansas from 1928 to 1930, compiling a record of 11–10–4. His 1928 team produced an undefeated record of 8–0 and was declared the champions of the newly-formed Central Intercollegiate Conference (CIC). Harr was also the athletic director at the College of Emporia until his resignation in 1931.
Harr died on December 23, 1982, in Fort Collins, Colorado.