Under the multi-year, multi-million dollar agreement, WSG has been appointed to market and manage sponsorships and licensing arrangements for the Tour platform, and also to oversee all television production and distribution on behalf of the Tour.
WSG was formerly a media partner of the Asian Tour.
"World Sport Group has played a pivotal role in the development of Asian golf since 1995...This, together with their unrivalled experience, expertise and client network in the marketplace makes WSG an excellent partner for OneAsia," the OneAsia Board said in a statement.
Golf associations from China, South Korea and Australia came together to form the platform, which continues to be at loggerheads with Asian Tour, which has recently banned a number of players for participating in OneAsia events.
"Asia is undoubtedly the future of world golf. It is no coincidence that U S PGA Tour officials have recently visited the OneAsia founding nations," WSG chairman Seamus O'Brien said.
"Interest in golf across the region is at an all-time high, and its entry into the Olympic Games will only serve to fuel its growth even further in all markets," he added.
OneAsia recently announced plans to expand its schedule in 2010 to 11 events from five this year. All events offer a purse of at least USD one million – an unprecedented development in the region.
This year, OneAsia events have been held in China, Korea and Australia. Two remaining events – the Australian Open and Australian PGA Championship presented by Coca-Cola -- are scheduled for December 3 to 6 and and 10 to 13th respectively.