# 2021 FSA Federation Cup

The 2021 Football South Australia Federation Cup, also known as the FFA Cup South Australian preliminary rounds until the semi-finals, was the 108th running of the Federation Cup, the main soccer knockout cup competition in South Australia. The competition also functioned as part of the 2021 FFA Cup preliminary rounds, with the two finalists qualifying for the main knockout competition.
Adelaide Olympic were champions for the second time, defeating Adelaide City 2–1 in the final, defending their 2019 title.

## Schedule

| Round | Draw date | Match dates | No. of fixtures | Teams | New entries this round |
| First round | 10 March | 24 March–14 April | 20 | 52 → 32 | 40 |
| Second round | 31 March | 23–24 April | 15 | 32 → 16 | 12 |
| Third round | 30 April | 14–16 May | 8 | 16 → 8 | None |
| Quarter-finals | 19 May | 8–9 June | 4 | 8 → 4 | None |
| Semi-finals | 11 June | 22–23 June | 2 | 4 → 2 | None |
| Final | — | 14 July | 1 | 2 → 1 | None |

## Teams

A total of 52 teams participated in the competition, 49 from the Greater Adelaide area, two from the Adelaide Hills region and one from Gawler 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. 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 FFA Cup competition at the Round of 32.
* National Premier League (2)
* Adelaide Blue Eagles
* Adelaide City
* Adelaide Comets
* Adelaide Croatia Raiders
* Adelaide Olympic
* Campbelltown City
* Croydon Kings
* Cumberland United
* North Eastern MetroStars
* South Adelaide Panthers
* Sturt Lions
* State League One (3)
* Adelaide Cobras
* Adelaide Hills Hawks
* Adelaide Victory
* Eastern United
* Fulham United
* Modbury Jets
* Para Hills Knights
* Playford City Patriots
* West Adelaide
* Western Strikers
* West Torrens Birkalla
* White City Woodville
* State League Two (4)
* Adelaide University
* Gawler Eagles
* Modbury Vista
* Mount Barker United
* Noarlunga United
* Northern Demons
* Pontian Eagles
* Port Adelaide Pirates
* Salisbury United
* Seaford Rangers
* The Cove
* Vipers FC
* Regional Leagues (5)
* Collegiate
* Adelaide University Grads Blue
* Cardijn Old Collegians
* Pembroke Old Scholars
* Rostrevor Old Collegians
* Sacred Heart Old Collegians
* Unley Old Scholars
* Amateur League (-)
* Adelaide Red Blue Eagles
* Adelaide Thunder
* Adelaide Titans
* BOSA FC
* Brahma Lodge
* Elizabeth Downs
* Ghan Kilburn City
* Ingle Farm
* Messinian Association Hawks
* Old Ignatians
* USC Lion

## Bracket

| First round Third preliminary round | First round Third preliminary round | Second round Fourth preliminary round | Second round Fourth preliminary round | Third round Fifth preliminary round | Third round Fifth preliminary round | Quarter-finals Sixth preliminary round | Quarter-finals Sixth preliminary round | Semi-finals Seventh preliminary round | Semi-finals Seventh preliminary round | Final | Final |
| The Cove | 3 | | | | | | | | | | |
| Noarlunga United | 2 | The Cove | 1 | | | | | | | | |
| | | Fulham United (a.e.t.) | 2 | | | | | | | | |
| | | | | Fulham United | 1 | | | | | | |
| | | | | Adelaide Olympic | 3 | | | | | | |
| | | Adelaide Olympic | 1 | | | | | | | | |
| Modbury Vista | 0 | Adelaide University | 0 | | | | | | | | |
| Adelaide University | 3 | | | | | Adelaide Olympic | 2 | | | | |
| Ghan Kilburn City | 6 | | | | | Croydon FC | 0 | | | | |
| Adelaide Titans | 1 | Ghan Kilburn City | | | | | | | | | |
| Adelaide Redblue Eagles | 2 | Salisbury United | w/o | | | | | | | | |
| Salisbury United | 4 | | | Salisbury United | 1 (4) | | | | | | |
| Northern Demons | 1 | | | Croydon FC (p) | 1 (5) | | | | | | |
| Adelaide Thunder | 0 | Northern Demons | 0 | | | | | | | | |
| | | Croydon FC | 4 | | | | | | | | |
| | | | | | | | | Adelaide Olympic | 1 | | |
| | | | | | | | | Campbelltown City | 0 | | |
| | | South Adelaide Panthers | 0 | | | | | | | | |
| | | Campbelltown City | 2 | | | | | | | | |
| | | | | Campbelltown City | 3 | | | | | | |
| Port Adelaide Pirates | 4 | | | Port Adelaide Pirates | 0 | | | | | | |
| Vipers FC | 1 | Port Adelaide Pirates | 4 | | | | | | | | |
| West Adelaide | 4 | West Adelaide | 2 | | | | | | | | |
| Seaford Rangers | 3 | | | | | Campbelltown City | 4 | | | | |
| | | | | | | Adelaide Comets | 1 | | | | |
| | | Adelaide Comets | 9 | | | | | | | | |
| Cardijn Old Collegians | 3 | Mount Barker United | 1 | | | | | | | | |
| Mount Barker United | 4 | | | Adelaide Comets | 4 | | | | | | |
| Adelaide Victory | 3 | | | Adelaide Victory | 0 | | | | | | |
| Rostrevor Old Collegians | 0 | Adelaide Victory | 3 | | | | | | | | |
| | | Adelaide Croatia Raiders | 2 | | | | | | | | |
| | | | | | | | | | | Adelaide Olympic | 2 |
| BOSA FC | 4 | | | | | | | | | Adelaide City | 1 |
| Adelaide Uni Grads Blue | 3 | BOSA FC | 1 | | | | | | | | |
| Modury Jets | 2 | Modbury Jets | 5 | | | | | | | | |
| Eastern United | 1 | | | Modbury Jets | 0 | | | | | | |
| | | | | Sturt Lions | 1 | | | | | | |
| | | Sturt Lions | 2 | | | | | | | | |
| | | Cumberland United | 0 | | | | | | | | |
| | | | | | | Sturt Lions | 2 | | | | |
| White City | 7 | | | | | Adelaide City | 4 | | | | |
| Unley Old Scholars | 0 | White City | 5 | | | | | | | | |
| Pembroke Old Scholars | 5 | Pembroke Old Scholars | 0 | | | | | | | | |
| Old Ignatians | 3 | | | White City | 2 | | | | | | |
| | | | | Adelaide City | 3 | | | | | | |
| | | Adelaide City | 3 | | | | | | | | |
| Adelaide Hills Hawks (a.e.t.) | 3 | Adelaide Hills Hawks | 2 | | | | | | | | |
| Adelaide Cobras | 2 | | | | | | | Adelaide City | 2 | | |
| USC Lion | 0 | | | | | | | North Eastern MetroStars | 0 | | |
| Pontian Eagles | 2 | Pontian Eagles | 3 | | | | | | | | |
| Brahma Lodge | 11 | Brahma Lodge (a.e.t.) | 4 | | | | | | | | |
| Sacred Heart Old Collegians | 0 | | | Brahma Lodge | 3 | | | | | | |
| Gawler Eagles | 1 | | | North Eastern MetroStars (a.e.t.) | 5 | | | | | | |
| West Torrens Birkalla | 2 | West Torrens Birkalla | 0 | | | | | | | | |
| | | North Eastern MetroStars | 2 | | | | | | | | |
| | | | | | | North Eastern MetroStars | 5 | | | | |
| Western Strikers | 1 | | | | | Playford City Patriots | 2 | | | | |
| Elizabeth Downs | 3 | Elizabeth Downs (a.e.t.) | 3 | | | | | | | | |
| Messinian Association Hawks | 0 | Para Hills Knights | 2 | | | | | | | | |
| Para Hills Knights | 5 | | | Elizabeth Downs | 0 | | | | | | |
| Playford City Patriots | 6 | | | Playford City Patriots | 3 | | | | | | |
| Ingle Farm | 0 | Playford City Patriots | 2 | | | | | | | | |
| | | Adelaide Blue Eagles | 1 | | | | | | | | |

## First round

The first round of the Federation Cup was also the third round of the 2021 FFA Cup preliminary rounds. Fulham United (3) received a bye to the second round.
Times before 4 April are in ACDT, times on or after 4 April are in ACST

## Second round

The second round of the Federation Cup was also the fourth round of the 2021 FFA 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 ACST

## Third round

The third round of the Federation Cup was also the fifth round of the 2021 FFA Cup preliminary rounds.
All times are in ACST

## Quarter-finals

The quarter-finals of the Federation Cup was also the sixth round of the 2021 FFA Cup preliminary rounds.
All times are in ACST

## Semi-finals

The semi-finals of the Federation Cup was also the seventh round of the 2021 FFA Cup preliminary rounds, with the two winners qualifying for the 2021 FFA Cup.
All times are in ACST