Bill Halter, American scholar, activist, and politician, 14th Lieutenant Governor of Arkansas
William A. Halter Jr (born November 30, 1960) is an American politician who served as the 18th Lieutenant Governor of Arkansas from 2007 to 2011. A member of the Democratic Party, he was elected to succeed the late Republican Winthrop Paul Rockefeller in 2006, defeating Republican challenger Jim Holt.

Before his election as lieutenant governor, Halter served as the Deputy Commissioner (1999–2001) and Acting Commissioner (2001) of the Social Security Administration. He previously worked as a senior adviser in the Office of Management and Budget from 1993 to 1999. A native of North Little Rock, he is a graduate of Stanford University and Oxford University.

He unsuccessfully challenged two-term incumbent Blanche Lincoln for the Democratic nomination for the U.S. Senate, losing in the June 8, 2010 runoff after neither won a majority in the May primary. After the bruising primary, Lincoln lost to her Republican opponent John Boozman in the general election. Halter ran for the Democratic nomination for Governor of Arkansas in 2014 but dropped out, citing concerns over a divisive primary hurting Democratic chances for the seat.