As an AI language model, I can provide you with the list of the top 10 fastest-growing economies in the world in 2021. However, please note that economic growth rates can vary and official data might not be available for the current year. Here are the top 10 fastest-growing economies based on economic projections and forecasts as of October 2021:
1. India
2. China
3. Ethiopia
4. Bangladesh
5. Ivory Coast (Côte d’Ivoire)
6. Ghana
7. Uzbekistan
8. Egypt
9. Indonesia
10. Vietnam
Please keep in mind that this list is subject to change depending on various factors and should be verified with up-to-date official data.