State Attorney-General Robert Clark is set to address a hardline pro-life event in Melbourne organised by a controversial US-based group dedicated to preventing abortion and the decriminalisation of homosexuality.

Less than three months before the November 29 state election, Mr Clark will deliver a "welcome to Victoria" speech to the World Congress of Families – an event which also features an American doctor promoting a discredited link between abortion and breast cancer, a promoter of Russia's "crusade" against homosexuality, and representatives from the hard-right Rise Up Australia Party.

Social Services Minister Kevin Andrews will open and close the World Congress of Families. Credit:Andrew Meares

The conference, which will take place late next month, will be opened and closed by federal Social Services Minister Kevin Andrews, who, according to the flyer for the event, is an international ambassador for the congress.

Mr Andrews will be joined by the congress' managing director, Larry Jacobs. Dr Jacobs has been a strong supporter of Russian laws banning gay pride demonstrations and "homosexual propaganda".