The writers' advocacy group, PEN International, has written to the Australian government calling for the release of a Kurdish Iranian journalist from Manus Island.
Behrouz Boochani is detained on Canberra's offshore detention centre in Papua New Guinea, where he has been found to be a refugee.
But under Australian law, since he tried to reach Australia by boat as an asylum seeker he will never be resettled there.
In their letter to the Australian immigraiton minister Peter Dutton, the group says Mr Boochani has worked greatly to preserve Kurdish culture and language, including during his detention.
It says Mr Boochani faces imminent danger should he be returned to Iran, and his claim should be immediately heard in Australia.