The sixteenth season of the American television sitcom series It's Always Sunny in Philadelphia premiered on FXX on June 7 and concluded on July 19, 2023, consisting of eight episodes.

This season has first on demand availability on FXNOW and next day availability on Hulu.

[1] The series was renewed for a sixteenth season in December 2020, along with two additional seasons confirmed.

[3] Filming began in January 2023 and concluded in March 2023.

[4][5] On Rotten Tomatoes, the season has an approval rating of 100% with an average score of 7.9 out of 10 based on 9 reviews.