South Korean rapper Psy is fronting a campaign to help eradicate polio in Asia and Africa.

The Gangnam Style hitmaker has signed up as a celebrity ambassador for the Rotary International humanitarian organisation and he's fronting the organisation's This Close to Ending Polio ads.

He says, "I grew up in a Rotary family as my father and my late grandfather were Rotary members. My grandfather was very passionate and dedicated to Rotary. He had a big heart and always inspired me to help others."