| Team: | San Miguel Beermen |
| Pbayear: | 2008–09 |
| Coach: | Siot Tanquingcen |
| 1C-Name: | Philippine Cup |
| 1C-Wins: | 15 |
| 1C-Losses: | 15 |
| 1C-Place: | 4th |
| 1C-Playoffs: | Semifinals (lost to TNT 4–2) |
| 2C-Name: | Fiesta Conference |
| 2C-Wins: | 19 |
| 2C-Losses: | 8 |
| 2C-Place: | 1st |
| 2C-Playoffs: | Champions (Defeated Brgy.Ginebra 4–3) |
| Owners: | San Miguel Corporation |
| Manager: | Hector Calma |
| Pol Team: | 3 |
| Prevseason: | 2007–08 |
| Nextseason: | 2009–10 |
The 2008–09 San Miguel Beermen season was the 34th season of the franchise in the Philippine Basketball Association (PBA).
See main article: 2008 PBA Draft.
|- bgcolor="#edbebf"| 1| October 5| Alaska| 84–85| Custodio (14)| | | Cuneta Astrodome| 0–1|- bgcolor="#bbffbb"| 2| October 10| Purefoods| 111–98| Hontiveros (15)| | | Cuneta Astrodome| 1–1|- bgcolor="#bbffbb" | 3| October 15| Rain or Shine| 89–82| Hontiveros (17)| | | Araneta Coliseum| 2–1|- bgcolor="#bbffbb" | 4| October 17| Talk 'N Text| 84–77| Washington (21)| | | Araneta Coliseum| 3–1|- bgcolor="#bbffbb" | 5| October 22| Brgy.Ginebra| 118–89| Tugade (21)| | | Araneta Coliseum| 4–1|- bgcolor="#edbebf" | 6| October 25| Red Bull| 113–114| Hontiveros (21)| | | Gingoog| 4–2|- bgcolor="#bbffbb" | 7| October 30| Sta.Lucia| 89–71| Tugade (19)| | | Ynares Sports Arena| 5–2|- bgcolor="#bbffbb" | 8| November 5| Air21| 130–129 (2OT)| Hontiveros (25)| Washington (13)| | Araneta Coliseum| 6–2|- bgcolor="#bbffbb" | 9| November 12| Coca Cola| 89–86| Pennisi (18)| | | Cuneta Astrodome| 7–2|- bgcolor="#edbebf" | 10| November 15| Alaska| 85–91| Custodio (20)| | | | 7–3|- bgcolor="#edbebf"| 11| November 19| Sta.Lucia| | | | | Araneta Coliseum| 7–4|- bgcolor="#edbebf" | 12| November 23| Purefoods| 83–84| Tugade (18)| | | Cuneta Astrodome| 7–5|- bgcolor="#bbffbb" | 13| November 26| Air21| 98–78| | | | Araneta Coliseum| 8–5|- bgcolor="#edbebf" | 14| November 30| Talk 'N Text| 80–85| Tugade (20)| | | Singapore Indoor Stadium| 8–6|- bgcolor="#bbffbb"| 15| December 6| Red Bull| 89–84 [1] | Washington (24)| | | Cuneta Astrodome| 9–6|- bgcolor="#edbebf"| 16| December 12| Coca Cola| 91–105| | | | Araneta Coliseum| 9–7|- bgcolor="#edbebf" | 17| December 17| Rain or Shine| 92–93| Hontiveros (24)| | | Araneta Coliseum| 9–8|- bgcolor="#edbebf" | 18| December 20| Brgy.Ginebra| 82–87| | | | Batangas City| 9–9