The 1978–79 Gillette Cup was the tenth season of official List A domestic cricket in Australia. Six teams representing six states in Australia took part in the competition. The competition began on 28 October 1978 when Queensland took on South Australia at the Gabba in Brisbane.

The 1978–79 Cup Final was played on 14 January 1979 at the TCA Ground in Hobart between Western Australia and Tasmania, who had been the finalists in the previous season as well. In a reversal of the previous season's result, Tasmania caused a major upset to win their first-ever domestic title by beating Western Australia by 47 runs.

The 1978–79 Gillette Cup was not played in the round-robin format that would become popular in later seasons. Instead, the two finalists from the previous season, Western Australia (winners) and Tasmania (runners-up) progressed automatically to the semi-finals, whilst the four remaining states were randomly allocated an opponent in a knockout match.

	First Round				Semi-finals				Final
	28 October – Brisbane
	South Australia	101allout
					10 December – Brisbane
	Queensland	2/105
					Queensland	6/232
					Tasmania	9/236
	Tasmania
									14 January – Hobart
	BYE
									Tasmania	6/180
	29 October – Sydney
									Western Australia	133allout
	New South Wales	6/156
					23 December – Perth
	Victoria	5/157
					Western Australia	6/215
					Victoria	7/214
	Western Australia
	BYE

• Sheffield Shield season 1978-79
• Australian cricket team in 1978-79