| Competition: | Peruvian Segunda División |
| Season: | 2003 |
| Dates: | 3 May – 25 October 2003 |
| Winners: | Sport Coopsol |
| Relegated: | América Cochahuayco |
| Matches: | 156 |
| Total Goals: | 373 |
| Prevseason: | 2002 |
| Nextseason: | 2004 |
The 2003 Peruvian Segunda División, the second division of Peruvian football (soccer), was played by 13 teams. The tournament winner, Sport Coopsol, was promoted to the 2004 Torneo Descentralizado. The last place, América Cochahuayco, was relegated. The tournament was played on a home-and-away round-robin basis.