Malaysian opposition leader Anwar Ibrahim is to appear at Adelaide's Festival of Ideas this weekend.
Premier Jay Weatherill said the festival had a history of bringing prominent thinkers to Adelaide and was proud to host the leading democracy campaigner.
"There are strong demands for strengthening democracies around the world - both in mature democracies and in some of the newer democracies," he said in a statement.
Independent Senator Nick Xenophon said Mr Anwar was a beacon of hope for democracy, not just in Malaysia but for the entire region.
"Despite over six years' imprisonment in solitary confinement on false charges - eventually quashed - and being severely beaten in custody, Answar remains an inspirational and optimistic icon for democratic change," he said.
Senator Xenophon, who was deported and banned from Malaysia earlier this year, said it was great Mr Anwar could come to Adelaide to share his experiences and insights.
Mr Anwar will appear in conversation with ABC broadcaster Waleed Aly on Saturday.Adelaide's ninth Festival of Ideas opens on October 17 with a keynote address from cosmologist Paul Davies.