| Club: | Sydney FC |
| League Result: | 2nd (League) Champions (Finals) |
| Cup1 Result: | Champions |
| Cup2 Result: | Champions |
| Cup3 Result: | Semi-finals |
| Cup4 Result: | 5th |
| League Topscorer: | Sasho Petrovski |
| Highest Attendance: | 41,689 v Central Coast Mariners 5 March 2006 |
| Lowest Attendance: | 9,132 v Newcastle 30 October 2005 |
| Pattern La1: | _navyshoulders |
| Pattern B1: | _navyangleshoulder |
| Leftarm1: | b0f0f0 |
| Body1: | b0f0f0 |
| Rightarm1: | 000060 |
| Shorts1: | 000060 |
| Socks1: | b0f0f0 |
| Pattern La2: | _shouldersonwhite |
| Pattern B2: | _shouldersonwhite |
| Pattern Ra2: | _shouldersonwhite |
| Leftarm2: | b0f0f0 |
| Body2: | FFFFFF |
| Rightarm2: | b0f0f0 |
| Shorts2: | b0f0f0 |
| Socks2: | FFFFFF |
| Nextseason: | 2006–07 |
The 2005-06 season was Sydney FC's first season, formed to compete in the new Australian A-League competition. The club finished second on the table in the regular season, and won the first A-League Grand Final, defeating Central Coast Mariners 1–0. Sydney also represented Oceania at the FIFA Club World Championship 2005 where they were placed fifth.
| width=25% | Player | width=20% | From | width=25% | League | width=10% | Fee | width=20% | Date |
|---|---|---|---|---|---|---|---|---|---|
| Free | 17 November 2004 | ||||||||
| Free | 17 November 2004 | ||||||||
| unattached | – | – | 17 November 2004 | ||||||
| unattached | – | – | 17 November 2004 | ||||||
 NSW Premier League | Free | 17 November 2004 | |||||||
| Free | 17 November 2004 | ||||||||
| Walsall FC (released) | – | 1 December 2004 | |||||||
| Free | 4 December 2004 | ||||||||
| Bray Wanderers A.F.C. (released) | – | 4 December 2004 | |||||||
| NSW Premier League | Free | 4 December 2004 | |||||||
| – | – | 4 December 2004 | |||||||
| Free | 9 December 2004 | ||||||||
| Free | 9 December 2004 | ||||||||
| SV Eintracht Trier 05 (released) | – | 13 December 2004 | |||||||
| Mersin Idman Yurdu (released) | – | 5 January 2005 | |||||||
| Hamilton Academical (released) | – | 16 February 2005 | |||||||
| Hamilton Academical (released) | – | 11 March 2005 | |||||||
| Morecambe (released) | – | 12 March 2005 | |||||||
| Free | 15 March 2005 | ||||||||
| Free | 16 April 2005 |
| width=20% | Player | width=20% | From | width=15% | Start date | width=15% | End date | width=30% | Reason |
|---|---|---|---|---|---|---|---|---|---|
| Kemblawarra FC (loan) | 16 May 2005 | 30 June 2005 | Signed for Oceania Club Championship | ||||||
| 29 November 2005 | 17 December 2005 | Signed for Club World Championship | |||||||
| Todd Brodie | Marconi Stallions (loan) | 16 May 2005 | 30 June 2005 | Signed for Oceania Club Championship | |||||
| St George Saints (loan) | 16 May 2005 | 30 June 2005 | Signed for Oceania Club Championship | ||||||
| Sydney Olympic FC (loan) | 16 May 2005 | 30 June 2005 | Signed for Oceania Club Championship | ||||||
| 1 September 2005 | 3 September 2005 | Cover for Sasho Petrovski while on international duty | |||||||
| 4 October 2005 | 4 November 2005 | Replacement for Steve Laurie | |||||||
| 29 November 2005 | 17 December 2005 | Signed for Club World Championship | |||||||
 Yokohama FC (loan) | 4 November 2005 | 17 December 2005 | Guest player | ||||||
| Belconnen Blue Devils (loan) | 29 November 2005 | 17 December 2005 | Signed for Club World Championship | ||||||
| Notts County F.C. (released) | 29 November 2005 | 17 December 2005 | Signed for Club World Championship | ||||||
| 21 January 2006 | 6 March 2006 | Injury cover for Ufuk Talay | |||||||
| Blacktown City Demons (loan) | 9 February 2006 | 6 March 2006 | Injury cover for David Zdrilic | ||||||
| Competition | Started round | Final position / round | First match | Last match | ||
|---|---|---|---|---|---|---|
| Oceania Club Championship Qualification | Round 1 | bgcolor=gold | champions | 7 May 2005 | 15 May 2005 | |
| 2004–05 Oceania Club Championship | Group Stage | bgcolor=gold | champions | 31 May 2005 | 10 June 2005 | |
| Pre-Season Challenge Cup | Group Stage | Semi-finalist | 23 July 2005 | 12 August 2005 | ||
| 2005–06 A-League | — | bgcolor=silver | 2nd | 28 August 2005 | 3 February 2006 | |
| 2005 FIFA Club World Championship | Quarter-finals | 5th | 12 December 2005 | 16 December 2005 | ||
| 2005–06 A-League Finals | Semi-finals | bgcolor=gold | champions | 10 February 2006 | 5 March 2006 |
See main article: 2005 OFC Club Championship.
See main article: 2005 A-League Pre-Season Challenge Cup.
See main article: 2005–06 A-League.
See main article: 2005 FIFA Club World Championship.
Players with no appearances not included in the list.
| No. | Pos. | Nat. | Name | A-League | CWC Qualifying | Pre-Season Cup | OFC Club Championship | Club World Championship | Total | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Apps | Goals | Apps | Goals | Apps | Goals | Apps | Goals | Apps | Goals | Apps | Goals | |||||
| 1 | GK | 24 | 0 | 3 | 0 | 4 | 0 | 5 | 0 | 2 | 0 | 38 | 0 | |||
| 2 | DF | 20(3) | 0 | 3 | 0 | 4 | 0 | 5 | 1 | 2 | 0 | 34(3) | 1 | |||
| 3 | DF | 24 | 1 | 3 | 0 | 4 | 0 | 5 | 1 | 1 | 0 | 37 | 2 | |||
| 4 | DF | 10(6) | 3 | 0(1) | 0 | 0(1) | 0 | 1 | 0 | 1(1) | 0 | 15(9) | 3 | |||
| 6 | MF | | 15(1) | 1 | 3 | 1 | 2(1) | 0 | 4 | 1 | 1 | 0 | 25(2) | 3 | ||
| 7 | MF | | 2(14) | 1 | 0(3) | 0 | 3(1) | 0 | 4 | 0 | 0 | 0 | 9(18) | 1 | ||
| 8 | MF | | 13(7) | 1 | 3 | 0 | 0 | 0 | 5 | 1 | 1 | 0 | 22(7) | 2 | ||
| 9 | FW | | 9(10) | 1 | 3 | 0 | 0(1) | 0 | 5 | 9 | 0(2) | 0 | 17(13) | 10 | ||
| 10 | MF | | 21(1) | 5 | 0(3) | 0 | 4 | 1 | 2(3) | 3 | 2 | 0 | 29(7) | 9 | ||
| 11 | FW | | 20(2) | 9 | 3 | 2 | 3 | 3 | 4 | 4 | 2 | 0 | 32(2) | 18 | ||
| 12 | MF | | 22(2) | 6 | 3 | 2 | 4 | 0 | 5 | 1 | 2 | 1 | 36(2) | 6 | ||
| 14 | MF | | 13(7) | 1 | 3 | 1 | 4 | 0 | 5 | 1 | 1(1) | 0 | 26(8) | 3 | ||
| 15 | MF | 16(5) | 1 | 3 | 0 | 4 | 0 | 4 | 0 | 1(1) | 0 | 28(6) | 1 | |||
| 16 | DF | | 10 | 0 | 3 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 15 | 0 | ||
| 17 | DF | | 18(3) | 0 | 0(1) | 0 | 4 | 0 | 0 | 0 | 0 | 0 | 22(4) | 0 | ||
| 18 | DF | | 0 | 0 | 0 | 0 | 0 | 0 | 0(1) | 0 | 0 | 0 | 0(1) | 0 | ||
| 19 | FW | 19(2) | 7 | 0 | 0 | 3 | 1 | 0 | 0 | 2 | 1 | 29(2) | 9 | |||
| 23 | MF | | 4(2) | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 4(2) | 1 | ||
All A-League club kits were supplied by Reebok through a sponsorship deal with the A-League, and all clubs initially had a white change strip, Sydney adopting a light blue trim to their away shirts. The home shirt colour of sky blue adopted the NSW representative colour, contrasted with the navy blue and orange trim.
Shirt sponsorship was secured with health insurance provider Healthe.