2003 in spaceflight
This article outlines notable events occurring in 2003 in spaceflight, including major launches and EVAs.
Orbital launches
August
Orbital launch statistics
By country
For the purposes of this section, the yearly tally of orbital launches by country assigns each flight to the country of origin of the rocket, not to the launch services provider or the spaceport.By orbit
| Orbital regime | Launches | Failures | Accidentally achieved | Remarks | |
| Transatmospheric | 0 | 0 | 0 | 0 | |
| Low Earth | 29 | 26 | 3 | 0 | 5 to ISS |
| Medium Earth / Molniya | 6 | 6 | 0 | 0 | |
| Geosynchronous / GTO | 23 | 23 | 0 | 0 | |
| High Earth / Lunar transfer | 1 | 1 | 0 | 0 | |
| Heliocentric / Planetary transfer | 5 | 5 | 0 | 0 | |
| Total | 64 | 61 | 3 | 0 |