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 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.