Captain John Henry Ebersole, M.D., United States Navy Medical Corps (26 January 1925 – 23 September 1993) was a pioneer in submarine medicine and radiation oncology, selected by Admiral Hyman G. Rickover to serve as medical officer aboard the US Navy's first two nuclear powered submarines, the USS Nautilus and the USS Seawolf.

Ebersole was the radiologist responsible for the x-rays taken during the autopsy of John F. Kennedy on 22 November 1963 at Bethesda Naval Medical Center.

Ebersole was assigned to Bethesda Naval Medical Center and was the radiologist for the autopsy of President John F. Kennedy.

Upon retirement from medical practice, Ebersole pursue a lifelong passion in mystery novels and crime fiction.

According to The New York Times report: The President was briefed about controlled radiation exposure aboard nuclear-powered submarines.

The medical officer, Lieutenant Commander John E. Ebersole of Sterling, Illinois, explained to the President that submariners in the new type craft get an average radiation dosage of about 200 milliroentgens a year, compared with an allowable industrial dose of about 300 a week.

"[9]During his tour, the Seawolf set a new record of submergence for 60 days under the command of Captain Richard Boyer Laning.

Captain Laning and the Seawolf crew were greeted upon return to port at New London, Connecticut, by Rear Admiral Hyman G.

The coursework for officers to be assigned to nuclear submarines and ships began at Reed College in Oregon with 24 weeks of training.

Then they received 6 weeks of field training at the Atomic Energy Commission's Hanford plutonium production facilities in Washington.

The committee included: Dr. William Randolph Lovelace II, Captain Norman L. Barr, Lieutenant Commander John H. Ebersole, Brigadier General Donald D. Flickinger, LtCol Robert H. Holmes, Dr. Wright Haskell Langham, Dr. Robert Burr Livingston, Dr. Orr Reynolds, and Boyd C. Myers II, committee secretary.

[14][15][16] Ebersole was the radiologist responsible for the x-rays taken during the autopsy of John F. Kennedy on 22 November 1963 at Bethesda Naval Medical Center.