Albert Benjamin "Happy" Chandler Sr. (July 14, 1898 – June 15, 1991) was an American politician from Kentucky. He represented Kentucky in the U.S. Senate and served as its 44th and 49th governor. Aside from his political positions, he also served as the second commissioner of baseball from 1945 to 1951 and was inducted into the Baseball Hall of Fame in 1982. His grandson, Ben Chandler, later served as representative for Kentucky's sixth district.
A multi-sport athlete during his college days at Transylvania College, Chandler briefly considered a career in professional baseball before deciding to pursue a law degree. After graduation, he entered politics and was elected as a Democrat to the Kentucky Senate in 1929.