The right-wing anti-Islam organisation Q Society of Australia has announced it will deregister itself because religious freedom legislation will make it "an easy target for hostile litigation" and put its board members at risk of being sued.

A letter to "members and supporters" sent out this week by Q Society president Debbie Robinson says the group decided at its last AGM to voluntarily deregister its incorporated organisation by the end of the financial year.

Q Society president Debbie Robinson speaks at a fundraiser at North Ryde RSL in February 2017. Credit:Wolter Peeters

Q Society, which has been criticised as Islamophobic, is registered in Victoria as a non-profit.

Ms Robinson’s letter says Q Society has lost so much financial support it can barely cover the costs of insurance, statutory compliance and office administration.