| Competition: | Primera División |
| Season: | 2005–06 |
| Dates: | 5 August 2005 – 14 May 2006 |
| Winners: | Apertura: Boca Juniors (27th title) Clausura: Boca Juniors (28th title) |
| Continentalcup1: | 2007 Copa Libertadores |
| Continentalcup1 Qualifiers: | Boca Juniors Gimnasia y Esgrima (LP) River Plate Banfield Vélez Sarsfield |
| Continentalcup2: | 2006 Copa Sudamericana |
| Continentalcup2 Qualifiers: | Gimnasia y Esgrima (LP) Banfield Vélez Sarsfield Lanús San Lorenzo |
| Prevseason: | 2004–05 |
| Nextseason: | 2006–07 |
The 2005–06 Argentine Primera División was the 115th season of top-flight football in Argentina. The season ran from 5 August 2005 to 14 May 2006.[1]
Tiro Federal (2004–05 Primera B Nacional champion)[2] and Gimnasia y Esgrima de Jujuy (after beating Huracán in a second promotion playoff) were promoted from Primera B Nacional.[3] [4] [5]
Boca Juniors won both, Apertura and Clausura championships totalising 28 league titles to date,[6] [7] while Instituto (C), Tiro Federal and Olimpo were relegated.[1]
| Competition: | Apertura |
| Season: | 2005 |
| Dates: | 5 August – 14 December |
| Winners: | Boca Juniors (27th. title) |
| Promoted: | |
| League Topscorer: |  Javier Cámpora (13) |
| Biggest Home Win: | Newell's 5–0 Instituto (16 Nov) Banfield 5–0 S. Lorenzo (25 Nov) |
| Biggest Away Win: | GELP 0–6 Vélez (20 Aug) |
| Highest Scoring: | S. Lorenzo 5–3 T. Federal (13 Nov) |
| Prevseason: | 2004–05 |
| Nextseason: | 2006–07 |
| Rank. | Player | Team | Goals |
|---|---|---|---|
| Boca Juniors | |||
| Gimnasia y Esgrima LP | |||
| Independiente | |||
| Colón |
| Competition: | Clausura |
| Season: | 2006 |
| Dates: | 27 January – 14 May |
| Winners: | Boca Juniors (28th. title) |
| Relegated: | |
| League Topscorer: | Gonzalo Vargas (12) |
| Biggest Home Win: | Argentinos 4–0 T. Federal (15 Apr) GELP 4–0 Quilmes (16 Apr) Boca Jrs. 4–0 Estudiantes LP (30 Apr) |
| Biggest Away Win: | T. Federal 0–5 River (29 Jan) Instituto 0–5 Independiente (1 Feb) |
| Highest Scoring: | Arsenal 2–5 GELP (19 Mar) |
| Prevseason: | 2004–05 |
| Nextseason: | 2006–07 |
| Rank. | Player | Team | Goals |
|---|---|---|---|
| Ernesto Farías | |||
| Boca Juniors | |||
| width=28 | width=185 | Team | width=50 | width=50 | width=50 | width=50 | width=50 | width=50 | Relegation | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Boca Juniors | 75 | 48 | 83 | 206 | 114 | ||||||||||
| 2 | River Plate | 66 | 60 | 62 | 188 | 114 | ||||||||||
| 3 | Vélez Sarsfield | 53 | 73 | 58 | 184 | 114 | ||||||||||
| 4 | Banfield | 64 | 59 | 59 | 182 | 114 | ||||||||||
| 5 | San Lorenzo | 62 | 52 | 56 | 170 | 114 | ||||||||||
| 6 | Newell's Old Boys | 51 | 60 | 51 | 162 | 114 | ||||||||||
| 7 | Gimnasia y Esgrima (LP) | 38 | 54 | 69 | 161 | 114 | ||||||||||
| 8 | Estudiantes (LP) | 44 | 61 | 52 | 157 | 114 | ||||||||||
| 9 | Lanús | 42 | 54 | 58 | 154 | 114 | ||||||||||
| 10 | Arsenal | 55 | 54 | 43 | 153 | 114 | ||||||||||
| 11 | Gimnasia y Esgrima (J) | — | — | 51 | 51 | 38 | ||||||||||
| 12 | Racing | 50 | 58 | 44 | 152 | 114 | ||||||||||
| 13 | Rosario Central | 44 | 61 | 45 | 150 | 114 | ||||||||||
| 14 | Independiente | 44 | 49 | 55 | 148 | 114 | ||||||||||
| 15 | Colón | 49 | 53 | 46 | 148 | 114 | ||||||||||
| 16 | Quilmes | 60 | 44 | 39 | 143 | 114 | ||||||||||
| 17 | Argentinos Juniors | — | 43 | 50 | 93 | 76 | Relegation Playoff Matches | |||||||||
| 18 | Olimpo | 39 | 43 | 49 | 131 | 114 | ||||||||||
| 19 | Instituto | — | 42 | 28 | 70 | 76 | Relegated to the Primera B Nacional | |||||||||
| 20 | Tiro Federal | — | — | 27 | 27 | 38 |
| Series | width=130px | Team 1 | width=130px | Team 2 | 1st. leg | Venue 1 | City 1 | 2nd. leg | Venue 2 | City 2 | Agg. |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Buenos Aires |