| Tournament information | |
|---|---|
| Dates | August 21–24, 2003 |
| Location | Akron, Ohio, U.S. |
| Course(s) | Firestone Country Club |
| Tour(s) | PGA Tour European Tour |
| Statistics | |
| Par | 70 |
| Length | 7,283 |
| Field | 85 players |
| Cut | None |
| Prize fund | $6,000,000 |
| Winner's share | $1,050,000 |
| Champion | |
 Darren Clarke | |
| 268 (−12) | |
The 2003 WGC-NEC Invitational was a golf tournament that was contested from August 21–24, 2003 over the South Course at Firestone Country Club in Akron, Ohio. It was the fifth WGC-NEC Invitational tournament, and the second of four World Golf Championships events held in 2003.
Darren Clarke won the tournament to capture his first WGC-NEC Invitational and his second World Golf Championships title.