If you forgot your Apple ID
If you forgot the email address or phone number that you use with your Apple ID or aren't sure if you have one, you can look it up or check if you're already signed in to an app or service.
What can be used to sign in to your Apple ID
You can use your Apple ID email address, or other email addresses or phone numbers on file with your account, to sign in to your Apple ID. If you can't remember your Apple ID, try to sign in with an email address or phone number that you regularly use for Apple services.
See if you're already signed in with your Apple ID
Check if you're signed in on your device. Or check if you're signed in to Apple apps or services
On your iPhone, iPad, or Apple Watch
Go to Settings > [your name] > Sign-In & Security.
Find the email addresses and phone numbers that you can use to sign in.
On your Mac
In macOS Ventura or later, choose Apple menu > System Settings, click your name, then click Sign-In & Security. You see the email addresses and phone numbers that you can use to sign in.
In earlier versions of macOS, choose Apple menu > System Preferences, then click Apple ID.
On your PC
Open iCloud for Windows, then look for your Apple ID under your name.
![In iCloud for Windows, your Apple ID email address is listed underneath your name.](https://cdsassets.apple.com/live/7WUAS350/images/apple-id/icloud-for-windows-15-apple-id.png)
Other ways to find your Apple ID
Check if you're signed in to the App Store, FaceTime*, or Messages on your Apple device.
Go to iCloud.com or appleid.apple.com and see if your Apple ID prefills on the sign-in screen.
If you're part of a Family Sharing group, you can ask a family member to check their Family Sharing settings for your Apple ID.
*FaceTime isn't available in all countries or regions.
Check your inbox for emails from Apple
Your Apple ID might be included in some emails from Apple. Search your inbox for receipts as well as repair, support, or billing emails from Apple.
![Find your Apple ID email address by searching for emails from Apple.](https://cdsassets.apple.com/live/7WUAS350/images/apple-id/web-browser-icloud-com-mail-apple-id.png)
If your email address is masked (j*****@icloud.com), the number of asterisks might not match the number of characters in your email address.