1978 NSL Cup
The 1978 NSL Cup was the second edition of the NSL Cup, which was the main national association football knockout cup competition in Australia. The competition was known as the Philips Cup under a sponsorship arrangement with Dutch company Philips.
Defending champions Brisbane City defeated Adelaide City 2–1 in the final to win their second and back-to-back NSL Cup title.
Teams
The NSL Cup was a knockout competition with 32 teams taking part all trying to reach the Final in October 1978. The competition consisted of the 14 teams from the National Soccer League plus 18 teams from their respective top division state leagues.| Round | Main date | Number of fixtures | Clubs remaining |
| First round | Wednesday 24 May 1978 | 16 | 32 → 16 |
| Second round | Wednesday 19 July 1978 | 8 | 16 → 8 |
| Quarter-finals | Sunday 24 September 1978 | 4 | 8 → 4 |
| Semi-finals | Sunday 1 October 1978 | 2 | 4 → 2 |
| Final | Sunday 24 September 1978 | 1 | 2 → 1 |