John Glover South (January 23, 1873 – May 13, 1940) was an American physician and diplomat who served as the United States Ambassador to Panama from 1921 to 1929, and the United States Ambassador to Portugal from 1930 to 1933.

[1][2] Born in Frankfort, Kentucky, South was a member of the prominent South–Cockrell–Hargis political family.

[2][3][4] In 1921, South was appointed United States Ambassador to Panama by president Warren G. Harding.

In 1930, he was appointed ambassador to Portugal by president Herbert Hoover, and served until 1933, when he retired from diplomatic life.

[3] At the age of 67, South died on May 13, 1940, after a long illness.