The multi-million dollar estate left by former Brisbane lord mayor Clem Jones will be used to help drive the campaign to legalise voluntary euthanasia in Queensland.

Clem Jones Trust chairman David Muir said after supporting the push for euthanasia laws in Victoria last year the trust will now push for Queensland to make the change.

Mr Muir said the current laws have left people with the choice of enduring intolerable suffering or breaking the law to end their life.