Well, as of now there is NO way you can rename a bucket in Amazon S3 but here is an extremely easy workaround to do that (moving all files from one bucket to another) – 
- Download S3Browser (free) or any other Amazon S3 client that supports copying files.
- Configure your client by entering Amazon Access keys.
- Create a new bucket (with desired name. Make sure it is in the same zone as your earlier bucket. By default Amazon S3 creates bucket in US standard region.)
- Go to the bucket from which you wish to copy files/folders and select and copy the required files/folders.
- Go to the bucket you created in Step3. Right click and paste. You’re done.
Since data movement happens at server level there is minimal movement-time involved. We were able to copy around 1 GB of data in less than 1 min.
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Ankur Jain is a Software Engineer in Test Automation. After a 5 years stint with Accenture and Oracle, he started his eLearning company. A long-time blogger and proud owner of the "Learn" series of websites. 
thanks for the info, I just went to the AWS console and quickly created the new bucket and moved the files, was easy, I want to add also that by this review I downloaded too S3 Browser, I like the portable versions, its just what I was looking for, I already use Gladinet, S3Fox, etc… but this one its light and easier, cool!
Thank you for mentioning S3 Browser in your article!
Pro version allows you to increase number of concurrent working threads and thereby speed up copying process even more!