* No official translation: Maddie is a nickname, and nicknames don't always translate directly between languages.
* Possible options:
* "Madeline" is the most common French spelling of the name, but it doesn't sound like "Maddie".
* You could use "Mad" as a nickname for "Madeleine" (though it might sound a bit strange to French speakers).
* "Maddy" is a possible spelling, but it's not particularly common.
Ultimately, the best way to spell "Maddie" in French depends on the context and your personal preference. If you're writing for a French audience, it's best to use a clear and understandable spelling.