The Ditmar Award is Australia's oldest and best-known science fiction, fantasy and horror award, presented annually at the Australian "NatCon" since 1969. The historical nominations and results (listed in boldface) of the Award follow.
(The programme book for the 1990 Natcon, Danse Macabre, records that no Ditmar Awards were presented in 1974.)
(The Australian newszine Thyme records that Tschaicon was the "First Australasian Science Fiction Convention", the relevant constitution having had "Australian" replaced with "Australasian" throughout; that the award categories used "Australasian" rather than "Australian"; and that the constitution was modified, at Tschaicon, to have "Australasian" changed back to "Australian".)
‘’Two items ruled ineligible; category withdrawn’’