The 1978 Australian Open was a tennis tournament played on outdoor grass courts at the Kooyong Lawn Tennis Club in Melbourne, Australia and was held from 25 December 1978 to 3 January 1979. It was the 67th edition of the Australian Open and the fourth Grand Slam tournament of the year. The singles titles were won by Argentinian Guillermo Vilas and Australian Chris O'Neil. Australian Open 1978: December 25–25, 1978 at Kooyong Lawn Tennis Club. Men's singles: Guillermo Vilas — 3rd major title. Women's singles: Chris O'Neil. Wiki link