Your Yahoo! ID is usually the first part of your free Yahoo! Mail address. For example, if your Yahoo! Mail address is person@yahoo.com, your Yahoo! ID is person.

If you are unable to remember your Yahoo! ID, you can always log in using the first part of your Yahoo! Mail address (if this is different from your Yahoo! ID), your Business Email address (such as linda@learn2yoga.com), or any of your other Yahoo! aliases (profiles), provided that they are part of the same Yahoo! account.

For example, if you knew that you had an alias called chatperson that you use in Yahoo! Messenger, you could log in to Yahoo! Mail using your chatperson alias and your password. Once logged in to your Yahoo! Mail account, your Yahoo! Mail address will be displayed at the top of your inbox.

You can also use the Yahoo! ID search form to find your Yahoo! ID. After you fill out the required fields, we'll send your Yahoo! ID to your alternate email address. (If you didn't provide an alternate email address during registration, unfortunately you cannot use this form.)

Learn more about Yahoo! IDs and passwords.