Frank Joseph Kelley (born December 31, 1924), was the 50th Attorney General of the U.S.
state of Michigan.
His 37-year term of office, from 1961 to 1999, made him both the youngest (36 years old) and oldest (74 years old) Attorney General in the state's history, and led to his nickname as the "Eternal General." He was the longest serving state attorney general in United States history, until Tom Miller of Iowa surpassed his longevity record in 2019.