How to change my name Minecraft?

Hallo!

I'm sorry, but there's no way to change your username on Minecraft. Not to fear! They did say on the Mojang website that they are planning it for the future! Unfortunately, there's no release date yet.

There's no possible way to do this as of yet, but if you want to get a completely random name while playing Minecraft online you can use the "/disguise" command and you will be getting a new name (again, a random name, not customizable).