Here's a breakdown:
Main Saga:
* X-Men (2000)
* X2: X-Men United (2003)
* X-Men: The Last Stand (2006)
* X-Men: First Class (2011)
* X-Men: Days of Future Past (2014)
* X-Men: Apocalypse (2016)
* Logan (2017)
* Dark Phoenix (2019)
Spin-offs:
* Deadpool (2016)
* Deadpool 2 (2018)
* The Wolverine (2013)
Other:
* X-Men Origins: Wolverine (2009)
Upcoming:
* Deadpool 3 (2024)
This list includes all the movies directly related to the X-Men franchise, but does not include any of the spin-offs that feature characters from the X-Men universe, such as the Fantastic Four films.