Can I change my QQ.com account username?

No, it is currently not possible to change your QQ.com account username. Once you have registered an account with QQ.com, the username you choose during the registration process cannot be modified or altered. It is important to select a username that you will be satisfied with for the duration of your account's use. Additionally, changing the username may cause confusion among your contacts, as they may be accustomed to recognizing you by your current username. Therefore, it is recommended to carefully select a username that reflects your identity and is easy for others to remember.