These phrases translate directly to "also known as" or "equally known as".
You can also use the abbreviation "a.k.a." in French, which stands for "also known as".
Here are some examples:
* "Michael Jackson, a.k.a. the King of Pop" - "Michael Jackson, aussi connu sous le nom de le Roi de la Pop"
* "The Eiffel Tower, a.k.a. La Dame de Fer" - "La Tour Eiffel, également connue sous le nom de La Dame de Fer"
You can also simply use "c'est-à-dire" which means "that is to say" or "in other words".
* "Beyoncé, c'est-à-dire Queen B" - "Beyoncé, c'est-à-dire Queen B"