List of earthquakes in 2003
| Strongest magnitude | 8.3 Mw Japan |
|---|---|
| Deadliest | 6.6 Mw Iran 34,000 deaths |
| Total fatalities | 36,832 |
| Number by magnitude | |
| 9.0+ | 0 |
| 8.0–8.9 | 1 |
| 7.0–7.9 | 15 |
| 6.0–6.9 | 140 |
| 5.0–5.9 | 1203 |
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This is a list of earthquakes in 2003. Only earthquakes of magnitude 6 or above are included, unless they result in damage and/or casualties, or are notable for some other reason. All dates are listed according to UTC (Coordinated Universal Time) time.