2.03 was the designation of the fifth Soviet Shuttle Buran reusable space vehicle.

2.03 was a second series shuttle, as shown by the '2' in its number. Construction on 2.03 was barely underway when the entire Soviet shuttle program was halted in 1993, and as such what parts of it had been built were dismantled shortly afterwards, and nothing remained of it by 1995.

Virtually no pictures of 2.03 exist due to its very short existence but its appearance would have been virtually identical to the other second series shuttles and very similar to the first series examples. As with shuttle 2.02, 2.03 was never given a name.

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