Original X-Men Trilogy:
* X-Men (2000): PG-13 (for intense sequences of sci-fi action violence)
* X2: X-Men United (2003): PG-13 (for intense sequences of action violence)
* X-Men: The Last Stand (2006): PG-13 (for intense sequences of action violence and some disturbing images)
Wolverine Solo Films:
* X-Men Origins: Wolverine (2009): PG-13 (for intense sequences of action violence and some disturbing content)
* The Wolverine (2013): PG-13 (for intense sequences of action violence and some suggestive material)
* Logan (2017): R (for strong brutal violence and language throughout)
First Class and Sequel Films:
* X-Men: First Class (2011): PG-13 (for intense sequences of action violence and some language)
* X-Men: Days of Future Past (2014): PG-13 (for intense sequences of action violence)
* X-Men: Apocalypse (2016): PG-13 (for intense sequences of action violence)
* Deadpool (2016): R (for strong violence, crude sexual content, language throughout and drug use)
* Deadpool 2 (2018): R (for strong violence and language throughout, crude sexual content, and brief drug use)
* Dark Phoenix (2019): PG-13 (for intense sequences of action violence)
Other X-Men Films:
* X-Men: The Animated Series (1992-1997): TV-Y7 (for some action violence)
Note: This list includes only the main X-Men films. There are also several other spin-off films and animated series with varying ratings.