No asylum talks for Ciobo in Iran

Trade Minister Steve Ciobo expected to hold talks on the repatriation of failed Iranian asylum seekers during his visit to Tehran - but it didn't happen.

Trade Minister Steve Ciobo hasn't spoken about repatriating failed asylum seekers on his Iran visit. (AAP)

Despite expecting to have the repatriation of failed asylum seekers raised during talks with Iran, Trade Minister Steve Ciobo says the topic never came up.

Mr Ciobo met with a number of Iranian ministers during a two-day visit leading a trade mission with Australian companies.

But he insists there were no discussions around Iran accepting the return of thousands of its citizens found not to be refugees in Australia.

"It wasn't raised," Mr Ciobo told AAP in Tehran on Wednesday.