| Rank | Vendor | 1Q 2003 Shipments | 1Q 2003 Market Share |
| 1 | Palm | 881,709 | 36.0% |
| 2 | HP | 44,000 | 18.1% |
| 3 | Sony | 400,000 | 16.3% |
| 4 | Dell | 159,000 | 6.5% |
| 5 | Toshiba | 87,322 | 3.6% |
| 6 | Casio | 83,250 | 3.4% |
| 7 | Handspring | 70,000 | 2.9% |
| 8 | Sharp | 68,960 | 2.8% |
| 9 | RIM | 51,000 | 2.1% |
| 10 | GSL | 48,500 | 2.0% |
| Other | 158,300 | 6.5% | |
| Total | 2,452,041 | 100% |