There are a few websites where you can find a list of celebrities' real names:

1. IMDb (Internet Movie Database): This website has a comprehensive database of celebrity names and provides biographical and filmography details. You can search for a celebrity's real name by looking up their profile page.

2. Wikipedia: Many celebrity pages on Wikipedia contain their real names in the introductory section. You can also search Wikipedia for a list of celebrities' real names and find articles that list them by genre or era.

3. BabyNames.com: This is a website that provides a list of celebrity baby names, including their given names. You can use this site to search for celebrity real names as well.

4. FamousBirthdays.com: This website has a section on each celebrity's page called "About" which lists basic information, including the celebrity's real name.

5. Ranker: Ranker is a website that ranks celebrities based on popularity across various genres. You can use the search bar on the homepage to find lists of celebrities' real names.

These are just a few websites to get you started, but there are many more out there that you can use to find celebrities' real names.