| Competition: | safa |
| Year: | 1878 |
| Teams: | 7 |
| Count: | 1 |
| Matches: | 42 |
| Highattend: | 3,000 (Round 13, vs) |
| Top Goal Scorer: | William Dedman (12 Goals) |
| Prevseason: | 1877 |
| Nextseason: | 1879 |
The 1878 South Australian Football Association season was the 2nd season of the top-level Australian rules football competition in South Australia.
The SAFA competition was contested by seven teams with the admission of newly formed club, after Bankers and Woodville folded at the end of 1877.
Each team played each other twice this season, the first time a standardised fixture was in place.
In its first season, won their first premiership, going through the year undefeated.[1]
The SAFA clubs played inter club matches on 4 May.
An additional pre season game was played between some South Australian and Victorian residents who live in Adelaide.
Premiership matches are those that took place after 11 May.[2]