if you are using AOL mail and due to any reason forgot your username then this is not a big issue you can easily get your username again you just need to follow some steps. i will tell you which steps you need to follow. Below i have mention some simple steps to recover your forgot username.
1. firs open your browser and go to AOL mail login page.
2. click on "forgot username".
3. choose the method which you want to use for username recovery .
4. check the email or mob no and enter the code which you have receive.
Now You will successfully got your username. but if you will still facing any problem during this process you can take AOL mail support desk help. who available 24*7 hr for users help.
Recover a forgotten username
Go to the Sign-in Helper.
Enter your recovery phone number or email address that you have access to.
Click Continue.
Click Yes, send me a verification code. ...
Enter your verification code.
Click Continue.
Choose the account you'd like to sign in to.