Your Facebook username is the web address people use to find your profile—it's different from your display name and affects how you show up in searches and messages. Understanding how usernames work on Facebook helps you control how you present yourself online and manage who can contact you. This matters because your username is public by default, and changing it has real consequences for links, tags, and how people reach you.
The articles here answer practical questions: how to pick a username that protects your privacy, what happens when you change it, whether you can use special characters or numbers, and how your username connects to your other Facebook settings. You'll also learn what to do if someone else is using a name you want, and how your username choice affects your security and searchability.