John Kingsley Lattimer, MD (October 14, 1914, in Mount Clemens, Michigan – May 10, 2007, in Teaneck, New Jersey) was a urologist who did extensive research on the Abraham Lincoln and John F. Kennedy assassinations, becoming the first medical specialist not affiliated with the United States government to examine the medical evidence related to Kennedy's assassination.[1] Lattimer studied at Columbia University and became the urologist-in-chief of Presbyterian Hospital and chairman of the urology department at the College of Physicians and Surgeons of Columbia University for 25 years.[2] He wrote 375 papers helping to establish pediatric urology as a field and is credited with developing a cure for renal tuberculosis.[1]