This is a list of members of the 4th Legislative Assembly of Queensland from 1868 to 1870, as elected at the 1868 colonial elections held between 14 September 1868 and 6 October 1868 (due to problems of distance and communications, it was not possible to hold the elections on a single day).[1]
4 On 6 April 1869, Robert Mackenzie, former premier and member for Burnett, retired from politics and departed for Europe. Charles Haly won the resulting by-election on 21 April 1869.
5 On 11 June 1869, Thomas Henry FitzGerald, member for Kennedy, resigned. Rt Hon John Bright, an English Radical politician who was endorsed as a form of protest, won the resulting by-election on 10 July 1869. He never took his seat in the Queensland Parliament.
6 On 19 November 1869, Archibald Archer, member for Rockhampton, resigned. Henry Milford won the resulting by-election on 6 December 1869, although did not take his seat.
8 On 3 December 1869, Edward Lamb, member for Mitchell, resigned. Archibald Berdmore Buchanan won the resulting by-election on 8 February 1870; however, it emerged he had not nominated as a candidate and had been elected against his own wishes, and he resigned two days later.
11 On 7 June 1870, Henry Milford, member for Rockhampton since a December 1869 by-election, resigned. He stood again at the resulting by-election on 20 June 1870, but was defeated by Alexander Fyfe.