Pioneering cancer researcher Bruce Robinson leads the nominees for Western Australia's Australian of the Year award.
Dr Robinson, who heads the University of WA's efforts to combat asbestos-related cancers, is one of four nominees.
The winners will be announced next month.
His team is acknowledged as being responsible for many breakthroughs, including the first blood test for mesothelioma.
He also directs the Fathering Project at the University of Western Australia.
WA's Australian of the Year, Senior Australian of the Year, Young Australian of the Year and Local Hero Award recipients will be revealed on November 9.
The WA winners become finalists for the national awards in Canberra on the day before Australia Day.
Mental health advocate Jennifer Allen, conservationist Atticus Fleming, and global poverty campaigner Michael Sheldrick have been nominated the main prize alongside Dr Robinson.
Other nominees include reconciliation advocate Fred Chaney and dancer Louise Howden-Smith for the seniors award, and teenage entrepreneur Naomi Henn and 25-year-old Pilbara doctor John van Bockxmeer in the Young Australian of the Year category.