[3] Harry Chan, the independent member for Fannie Bay and President of the Legislative Council, died on 5 August 1969.

Joe Fisher, a mining consultant and former appointed non-official member, was elected to replace him at a by-election on 20 September 1969.

Labor MLC for Nightcliff, Fred Drysdale, died on 15 December 1969.

Labor lost the seat at a by-election on 31 January 1970, with independent Norman Cooper elected.

Independent MLC Harold Brennan resigned as member for Victoria River (and from council for the third time) on 10 December 1969, in this instance to contest the federal Division of Northern Territory at the 1969 federal election.