Formal:
* Évidemment - This is the most common and straightforward translation.
* Naturellement - This translates to "naturally" and implies that something is obvious or expected.
Informal:
* Bien sûr - This means "of course" and is a more casual way to say "obviously."
* Sans aucun doute - This means "without a doubt" and emphasizes the certainty of the statement.
* C'est clair - This literally translates to "it's clear" and is a very informal way to say "obviously."
Other options:
* Il va sans dire - This means "it goes without saying" and is a more formal way to express that something is obvious.
* De toute évidence - This translates to "clearly" and emphasizes the obviousness of the statement.
The best translation will depend on the specific situation and the tone you want to convey.