John Isaac Cox (November 23, 1855 – September 5, 1946) was an American politician who served as Governor of Tennessee from 1905 to 1907.
He was elevated to the position when Governor James B.
Frazier resigned, and, as Speaker of the Tennessee Senate, he was the first in the line of succession.
He failed to win his party's nomination for a second term, and returned to the state senate, where he remained until 1911.
Cox also served as a county judge, city attorney, and local postmaster, and spent two terms in the Tennessee House of Representatives.The Tennessee state flag was adopted during Cox's term as governor.