| Year: | 2003 |
| Tour: | TPC Tour |
| Regular Season: | – |
| No Of Events: | 4 |
| Honor1: | Order of Merit |
| Prevseason: | 2002 |
| Nextseason: | 2004 |
The 2003 TPC Tour was the fifth season of the TPC Tour, one of the main professional golf tours in Thailand since it was formed in 1999.
The following table lists official events during the 2003 season.[1]
| Date | Tournament | Location | Purse (฿) | Winner | |
|---|---|---|---|---|---|
| 13 Apr | Singha Pattaya Open | Chonbori | 1,000,000 |  Thaworn Wiratchant (2) | |
| 22 Jun | TPC Championships | Samut Prakan | 1,000,000 |  Jim Johnson (1) | |
| 26 Jul | Singha Classic | Phetchaburi | 1,000,000 | Boonchu Ruangkit (3) | |
| 30 Jul | Cotto Open | Chonbori | 1,000,000 | Simon Yates (1) |