Back 1991 йылда йыһанға осороуҙар исемлеге Bashkir 1991 en els vols espacials Catalan Liste der orbitalen Raketenstarts (1991) German Luettelo vuoden 1991 miehittämättömistä avaruuslennoista Finnish 1991 en astronautique French 1991 באסטרונאוטיקה HE 1991 йисуз космосдиз ахъаюнрин сиягь LEZ Список космических запусков в 1991 году Russian
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This was the final year of the Soviet Union, and thus the end of the Cold War competition between the two space superpowers. The number of launches subsequently declined in the 1990s, and 2018 was the first year since 1990 to have more than 100 orbital launches.
 The crew of STS-37 deploys the Compton Gamma Ray Observatory. | |
| Orbital launches | |
|---|---|
| First | 8 January |
| Last | 28 December |
| Total | 91 |
| Successes | 86 |
| Failures | 3 |
| Partial failures | 2 |
| National firsts | |
| Space traveller |  Austria United Kingdom |
| Rockets | |
| Maiden flights | Ariane 4 44P Atlas II |
| Retirements | Vostok-2M |
| Crewed flights | |
| Orbital | 8 |
| Total travellers | 36 |