| Club: | Universidad San Martín de Porres |
| Season: | 2005 |
| Manager: |  Oscar Malbernat  Mario Flores Víctor Rivera Rafael Castillo |
| Chairman: | Universidad San Martín de Porres |
| League: | Primera División Peruana 2005 |
| League Result: | Full Table: 4° *Apertura: 7° *Clausura: 2° |
| Prevseason: | 2004 |
| Nextseason: | 2006 |
The 2005 season was the 2nd season of competitive football by Universidad San Martín de Porres.
| Date | Opponent team | Home/Away | Score | Scorers | |
|---|---|---|---|---|---|
| 5 March 2005 | Sporting Cristal | H | 1–2 | Ismodes | |
| 13 March 2005 | Alianza Atlético | A | 2–0 | Ismodes, F. Garcia | |
| 16 March 2005 | Universitario | H | 1–3 | Chacón | |
| 20 March 2005 | Cienciano | A | 0–1 | ||
| 2 April 2005 | Unión Huaral | H | 0–1 | ||
| 9 April 2005 | Atlético Universidad | A | 0–1 | ||
| 15 April 2005 | Coronel Bolognesi | H | 1–1 | Benites | |
| 20 April 2005 | U. César Vallejo | A | 0–0 | ||
| 30 April 2005 | Alianza Lima | H | 1–1 | P. Garcia | |
| 8 May 2005 | Sport Ancash | A | 1–2 | P. Garcia | |
| 11 May 2005 | Sport Boys | A | 1–1 | Luguercio | |
| 15 May 2005 | F.B.C. Melgar | H | 2–1 | Huamán, Luguercio | |
| 11 June 2005 | Sporting Cristal | A | 1–1 | Rengifo | |
| 15 June 2005 | Alianza Atlético | H | 0–0 | ||
| 18 June 2005 | Universitario | A | 1–2 | P. Garcia | |
| 25 June 2005 | Cienciano | H | 2–0 | Rengifo, Cambindo | |
| 29 June 2005 | Unión Huaral | A | 2–1 | Morales, Rengifo | |
| 3 July 2005 | Atlético Universidad | H | 5–0 | Rengifo, P. Garcia, Ismodes, Morales (x2) | |
| 9 July 2005 | Coronel Bolognesi | H | 0–2 | ||
| 13 July 2005 | U. César Vallejo | H | 2–0 | Rengifo, P. Garcia | |
| 20 July 2005 | Alianza Lima | A | 1–1 | Rengifo | |
| 24 July 2005 | Sport Ancash | H | 1–0 | Luguercio | |
| 27 July 2005 | F.B.C. Melgar | A | 0–3 | ||
| 31 July 2005 | Sport Boys | H | 3–2 | Rengifo, Carrillo, P. Garcia |
| Date | Opponent team | Home/Away | Score | Scorers | |
|---|---|---|---|---|---|
| 6 August 2005 | Cienciano | H | 2–0 | Chacón, Rengifo | |
| 10 August 2005 | Unión Huaral | A | 2–0 | Rengifo, Ismodes | |
| 14 August 2005 | F.B.C. Melgar | H | 7–1 | Rengifo (x3), Chacón, Ugaz, Alcázar, P. Garcia | |
| 20 August 2005 | Alianza Lima | A | 0–0 | ||
| 27 August 2005 | Coronel Bolognesi | H | 0–2 | ||
| 30 August 2005 | U. César Vallejo | A | 1–2 | own goal | |
| 17 September 2005 | Sport Ancash | H | 4–0 | Moisela, Huamán, Luguercio, P. Garcia | |
| 24 September 2005 | Sport Boys | A | 2–0 | own goal, Luguercio | |
| 28 September 2005 | Atlético Universidad | H | 2–1 | Moisela, P. Garcia | |
| 1 October 2005 | Universitario | A | 1–1 | Morales | |
| 16 October 2005 | Alianza Atlético | H | 1–0 | Rengifo | |
| 22 October 2005 | Sporting Cristal | A | 2–2 | P. Garcia (x2) | |
| 26 October 2005 | Cienciano | A | 2–2 | Ibarra, Del Solar | |
| 30 October 2005 | Unión Huaral | H | 1–1 | Del Solar | |
| 2 November 2005 | F.B.C. Melgar | A | 2–0 | Morales, Carrillo | |
| 5 November 2005 | Alianza Lima | H | 0–3 | ||
| 12 November 2005 | Coronel Bolognesi | A | 2–1 | P. Garcia (x2) | |
| 16 November 2005 | U. César Vallejo | H | 0–0 | ||
| 27 November 2005 | Sport Ancash | A | 1–0 | P. Garcia | |
| 4 December 2005 | Sport Boys | H | 1–0 | Rengifo | |
| 7 December 2005 | Atlético Universidad | A | 1–3 | Rengifo | |
| 11 December 2005 | Universitario | H | 1–0 | P. Garcia | |
| 14 December 2005 | Alianza Atlético | A | 4–1 | Morales, Rengifo, Ismodes, Ugaz | |
| 17 December 2005 | Sporting Cristal | H | 1–0 | Ibarra |
| Date | Opponent team | Home/Away | Score | Scorers | |
|---|---|---|---|---|---|
| 29 January 2005 | Sport Boys | N | 0–1 | ||
| 10 February 2005 |  Once Caldas | A | 1–2 |