Anna Belle Clement O'Brien (May 6, 1923 – August 31, 2009) was a Tennessee politician, nicknamed "the first lady of Tennessee politics." She served as the governor's chief of staff from 1963 to 1967, was a member of the Tennessee House of Representatives in the 89th General Assembly, from 1975 to 1977, and a Tennessee State Senator in the 90th to 96th General Assemblies, from 1977 to 1991. While she was not the first woman ever to be in the Tennessee Senate, she was the first woman ever to be a chairman of a committee (as enacted in her tenure). Senator Mildred Jolly Lashlee was Chair of the Public Utilities Committee 1945-1947 which was absorbed into Energy & Natural Resources Committee during Senator O'Brien's tenure. During her 22 years in the General Assembly, she was the chairperson f