| Date | Electorate | Outgoing member | Party | Reason for vacancy | Incoming member | Party |
|---|
| 3 March 2016 | Franklin | Paul Harriss | Liberal}}| | Liberal | Resigned | Nic Street | Liberal}}| | Liberal |
| 17 August 2015 | Franklin | Nick McKim | Greens}}| | Greens | Resigned to accept Senate appointment | Rosalie Woodruff | Greens}}| | Greens |
| 9 June 2015 | Bass | Kim Booth | Greens}}| | Greens | Resigned as Greens leader | Andrea Dawkins | Greens}}| | Greens |
| 26 May 2011 | Denison | David Bartlett | Labor}}| | Labor | Resigned as Premier | Graeme Sturges | Labor}}| | Labor |
| 9 February 2009 | Franklin | Paula Wriedt | Labor}}| | Labor | Resigned after being dropped as Minister | Daniel Hulme | Labor}}| | Labor |
| 28 July 2008 | Denison | Peg Putt | Greens}}| | Greens | Resigned as Greens leader | Cassy O'Connor | Greens}}| | Greens |
| 27 May 2008 | Franklin | Paul Lennon | Labor}}| | Labor | Resigned as Premier | Ross Butler | Labor}}| | Labor |
| 10 May 2005 | Lyons | Ken Bacon | Labor}}| | Labor | Resigned as Minister | Heather Butler | Labor}}| | Labor |
| 1 April 2004 | Denison | Jim Bacon | Labor}}| | Labor | Resigned as Premier due to ill health | David Bartlett | Labor}}| | Labor |
| 22 April 2002 | Franklin | Fran Bladel | Labor}}| | Labor | Resigned in unsuccessful bid for
Legislative Council seat of Huon
at 2002 periodic elections | Neville Oliver | Labor}}| | Labor |
| 19 October 2001 | Franklin | Peter Hodgman | Liberal}}| | Liberal | Resigned in unsuccessful bid for
Franklin at the 2001 federal election | Martin McManus | Liberal}}| | Liberal |
| 21 August 2001 | Denison | Ray Groom | Liberal}}| | Liberal | Resigned | Michael Hodgman | Liberal}}| | Liberal |
| 14 March 2000 | Bass | Frank Madill | Liberal}}| | Liberal | Resigned due to ill health | David Fry | Liberal}}| | Liberal |
| 15 July 1997 | Braddon | Michael Field | Labor}}| | Labor | Resigned | Mike Gard | Labor}}| | Labor |
| 15 July 1997 | Braddon | Roger Groom | Liberal}}| | Liberal | Resigned | Carole Cains | Liberal}}| | Liberal |
| 15 December 1995 | Lyons | Robin Gray | Liberal}}| | Liberal | Resigned | Denise Swan | Liberal}}| | Liberal |
| 15 May 1995 | Franklin | Gerry Bates | Greens}}| | Greens | Resigned in unsuccessful bid for
Legislative Council seat of
Queenborough at the
1995 periodic elections | Mike Foley | Greens}}| | Greens |
| 10 April 1995 | Franklin | Michael Aird | Labor}}| | Labor | Resigned in successful bid for
Legislative Council seat of Derwent
at the 1995 periodic elections | John Sheppard | Labor}}| | Labor |
| 26 February 1993 | Denison | Bob Brown | Greens}}| | Greens | Resigned | Peg Putt | Greens}}| | Greens |
| 15 October 1990 | Franklin | Ken Wriedt | Labor}}| | Labor | Resigned | Paul Lennon | Labor}}| | Labor |
| 6 August 1990 | Franklin | Nick Evers | Liberal}}| | Liberal | Resigned | Brian Davison | Liberal}}| | Liberal |
| 15 February 1990 | Denison | John Bennett | Liberal}}| | Liberal | Resigned | Chris Gibson | Liberal}}| | Liberal |
| 14 November 1988 | Franklin | Geoff Pearsall | Liberal}}| | Liberal | Resigned | John Cleary | Liberal}}| | Liberal |
| 29 September 1987 | Denison | Geoff Davis | Liberal}}| | Liberal | Resigned | John Barker | Liberal}}| | Liberal |
| 14 July 1987 | Lyons | Darrel Baldock | Labor}}| | Labor | Resigned to return to football coaching | Chris Batt | Labor}}| | Labor |
| 10 August 1984 | Bass | Michael Barnard | Labor}}| | Labor | Resigned | Peter Patmore | Labor}}| | Labor |
| 25 June 1984 | Denison | John Devine | Labor}}| | Labor | Resigned | Bob Graham | Labor}}| | Labor |
| 25 June 1984 | Denison | Max Bingham | Liberal}}| | Liberal | Resigned | Carmel Holmes | Liberal}}| | Liberal |
| 4 January 1983 | Denison | Norm Sanders | Democrats}}| | Democrat | Resigned | Bob Brown | Greens}}| | Green Independents |
| 8 September 1980 | Denison | Neil Batt | Labor}}| | Labor | Resigned | Bob Graham | Labor}}| | Labor |
| 28 September 1979 | Franklin | Eric Barnard | Labor}}| | Labor | Resigned | Bill McKinnon | Labor}}| | Labor |
| 12 December 1977 | Franklin | Bill Neilson | Labor}}| | Labor | Resigned | Bill McKinnon | Labor}}| | Labor |
| 10 July 1975 | Wilmot | Angus Bethune | Liberal}}| | Liberal | Resigned | Ian Braid | Liberal}}| | Liberal |
| 16 May 1975 | Braddon | Lloyd Costello | Labor}}| | Labor | Resigned | John Coughlan | Labor}}| | Labor |
| 12 April 1975 | Braddon | Eric Reece | Labor}}| | Labor | Resigned | Joseph Britton | Labor}}| | Labor |
| 17 August 1974 | Denison | Kevin Corby | Labor}}| | Labor | Resigned | John Green | Labor}}| | Labor |
| 26 July 1974 | Wilmot | Roy Fagan | Labor}}| | Labor | Resigned | Charles Batt | Labor}}| | Labor |
| 26 July 1974 | Bass | Allan Foster | Labor}}| | Labor | Resigned | Harry Holgate | Labor}}| | Labor |
| 27 April 1974 | Denison | Merv Everett | Labor}}| | Labor | Resigned in successful bid for
the Australian Senate at the
1974 federal election | Ian Cole | Labor}}| | Labor |
| 25 October 1968 | Bass | John Steer | Liberal}}| | Liberal | Died in office | James Henty | Liberal}}| | Liberal |
| 27 October 1966 | Franklin | Thomas Pearsall | Liberal}}| | Liberal | Resigned in successful bid for
seat of Franklin at the 1966 federal election | Eric Iles | Liberal}}| | Liberal |
| 10 July 1965 | Denison | Rex Townley | Liberal}}| | Liberal | Resigned | George Deas Brown | Liberal}}| | Liberal |
|