The 1978 National Soccer League was the second season of the National Soccer League, the former top-tier Australian soccer league, since its establishment in 1977. The premiers were West Adelaide.

Teams

Stadiums and locations

Note: Table lists in alphabetical order.

League table

Results

Finals series

The top four teams in the league entered a playoff series, however the winner of the grand final match was not considered the overall winner of the NSL season, unlike other NSL grand finals.

Individual awards