| 2023 FSA Federation Cup | |
| Other Titles: | 2023 Australia Cup South Australian preliminary rounds |
| Country: | Australia |
| Dates: | 10 February–24 June[1] |
| Num Teams: | 46 |
| Second: | Campbelltown City |
| Continental Cup Title: | Australia Cup |
| Continental Cup Qualifiers: | Campbelltown City North Eastern MetroStars |
| Matches: | 45 |
| Goals: | 196 |
| Scoring Leader: | Michael Cittadinni (6 goals) |
| Prev Season: | 2022 |
| Next Season: | 2024 |
The 2023 Football South Australia Federation Cup, also known as the 2023 Australia Cup South Australian preliminary rounds until the semi-finals,[1] was the 110th running of the Federation Cup, the main soccer knockout cup competition in South Australia. The competition also functioned as part of the 2023 Australia Cup preliminary rounds, with the two finalists qualifying for the main knockout competition.
North Eastern MetroStars were champions for the sixth time, defeating Campbelltown City 3–2 after extra time in the final.[2] Adelaide City were the defending champions, losing 1–0 in the quarter-finals to Campbelltown City.[3]
| Round | Draw date | Match dates | No. of fixtures | Teams | New entries this round | |
|---|---|---|---|---|---|---|
| First round | 20 January | 10–12 February | 14 | 46 → 32 | 28 | |
| Second round | 20 February | 16–19 March | 16 | 32 → 16 | 17 | |
| Third round | 22 March | 14–16 April | 8 | 16 → 8 | None | |
| Quarter-finals | 17 April | 9–16 May | 4 | 8 → 4 | None | |
| Semi-finals | 19 May | 31 May–7 June | 2 | 4 → 2 | None | |
| Final | — | 24 June | 1 | 2 → 1 | None |
A total of 46 teams participated in the competition, 41 from the Greater Adelaide area, two from the Adelaide Hills region, and one from Gawler, the Limestone Coast and Port Pirie. National Premier Leagues South Australia, State League One and State League Two represent levels 2–4 on the unofficial Australian league system, and are required to participate in the Federation Cup.[4] The South Australian Regional Leagues represent level 5. The South Australian Amateur Soccer League is not represented on the national league system. Adelaide United Youth are not eligibile for the tournament, as the senior team entered the Australia Cup competition at the Round of 32.[4]
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The first round of the Federation Cup was also the third round of the 2023 Australia Cup preliminary rounds. Seven teams received a bye to the second round: Adelaide Croatia Raiders (3), Elizabeth Downs (-), Elizabeth Grove (-), Noarlunga United (4), Pontian Eagles (4), Salisbury United (4) and Tea Tree Gully City (-).[5] The round included teams from all levels except the National Premier League.
All times are in ACDT
The second round of the Federation Cup was also the fourth round of the 2023 Australia Cup preliminary rounds, featuring 21 teams from the previous round and the 11 teams from the National Premier Leagues South Australia.
All times are in ACDT
The third round of the Federation Cup was also the fifth round of the 2023 Australia Cup preliminary rounds.
All times are in ACST.
The quarter-finals of the Federation Cup was also the sixth round of the 2023 Australia Cup preliminary rounds.
All times are in ACST
The semi-finals of the Federation Cup was also the seventh round of the 2023 Australia Cup preliminary rounds, with the two winners qualifying for the 2023 Australia Cup.
All times are in ACST
| Rank | Player | Club | Goals | |
|---|---|---|---|---|
| 1 |  Michael Cittadini | North Eastern MetroStars | 6 | |
| 2 | Austin Ayoubi | North Eastern MetroStars | 5 | |
 Katsuyoshi Kimishima | Adelaide City | |||
| Yiannis Nestoras | Northern Demons | |||
| 5 | Ninko Beric | FK Beograd | 4 | |
| Hamish Gow | North Eastern MetroStars | |||
 Gonzalo Rodriguez | Sturt Lions | |||
| Anthony Ture | West Torrens Birkalla | |||
| 9 | 13 players | 3 | ||