|Lieutenant Governor of South Dakota|
Seal of South Dakota
|Term length||4 years, renewable once, same election with The governor's Ticket|
|Inaugural holder||James H. Fletcher, 1889|
|Formation||Constitution of South Dakota|
He or she is the second-ranking member of the executive branch of South Dakota state government and also serves as presiding officer of the South Dakota Senate. The lieutenant governor succeeds to the officer of governor if the office becomes vacant, and may also serve as acting governor if the governor is incapacitated or absent from the state.
The lieutenant governor is elected on a ticket with the governor. Seven lieutenant governors have gone on to be elected governor in their own right: Charles N. Herreid, Frank M. Byrne, Peter Norbeck, William H. McMaster, Carl Gunderson, Nils Boe and Dennis Daugaard. Two others, Harvey L. Wollman and Walter Dale Miller, succeeded to the office of governor when it became vacant, but neither won re-election.
Carole Hillard became the first woman to serve as lieutenant governor when she was elected in 1994.
As of January 2017 [update], four former U.S. lieutenant governors of South Dakota were alive, the oldest being Harvey L. Wollman (served 1975–1978, born 1935). The most recent death of a former U.S. lieutenant governor of South Dakota was that of Walter Dale Miller (served 1987–1993, born 1925), on September 28, 2015. The most recent serving U.S. lieutenant governor of South Dakota to die was Carole Hillard (served 1995–2003, born 1936), on October 25, 2007.
|Lt. Governor||Lt. Gubernatorial term||Date of birth (and age)|
|Harvey L. Wollman||1975–1978||May 14, 1935|
|Lowell C. Hansen II||1979–1987||October 11, 1939|
|Steve T. Kirby||1993–1995||March 26, 1952|
|Dennis Daugaard||2003–2011||June 11, 1953|
- Clarence E. Coyne died on May 27, 1929, and John T. Grigsby was appointed to fill the vacancy.
- Joseph H. Bottum was appointed United States Senator on July 9, 1962. No appointment was made to fill the vacancy.
- Harvey L. Wollman succeeded to the office of governor on July 24, 1978 upon the resignation of Governor Richard F. Kneip. No appointment was made to fill the vacancy.
- Walter Dale Miller succeeded to the office of governor on April 19, 1993 after Governor George S. Mickelson was killed in a plane crash. Steve T. Kirby was appointed to fill the vacancy.