John Reginald Beardall (February 7, 1887 – January 4, 1967) was a rear admiral in the United States Navy.

He was superintendent of the United States Naval Academy in Annapolis, Maryland, from January 31, 1942, to August 16, 1945.

[2][3] Beardall served on USS Illinois as part of the Great White Fleet that toured the world in 1908.

Prior to World War II, he was an assistant naval aide to England.

[3][6] They had a daughter and two sons, Mrs. Y. Fitzhugh Hardcastle, Geoffrey Bonser and John R. Jr.[3][4] His brother was Orlando mayor William Beardall.

[4] He received the William Fremont Blackman Medal for "service to mankind" from Rollins College in 1964.