The 2006 Arkansas lieutenant gubernatorial election was held on November 7, 2006, to elect the Lieutenant Governor of Arkansas, concurrently with elections to the United States House of Representatives, governor, and other state and local elections. Primary elections were held on May 23, 2006, with primary runoff elections, if necessary, being held on June 13, 2006.
Incumbent Republican lieutenant governor Winthrop Paul Rockefeller, who was term-limited from seeking a third full term in office, died on July 16, 2006, due to complications from myeloproliferative disorder. The office remained vacant until the November general election.
Former Social Security Administration commissioner Bill Halter, who had previously considered a run for governor, defeated state legislator Jim Holt in the general election, flipping party control of the office. As of 2026, this election is the last time a Democrat was elected to the office of lieutenant governor.