The seventeenth season of the American television sitcom series It's Always Sunny in Philadelphia premiered on FXX on July 9 and concluded on August 20, 2025, consisting of eight episodes. Episodes were simulcast on FX and had same night availability on the FXNOW website, and next day availability on Hulu. The season stars Charlie Day, Glenn Howerton, Rob McElhenney, Kaitlin Olson, and Danny DeVito as "the Gang". In December 2020, after the fourteenth season aired, It's Always Sunny in Philadelphia was renewed for four additional seasons. Filming took place from October to December 2024.
Cast
Main cast Charlie Day as Charlie Kelly Glenn Howerton as Dennis Reynolds Rob McElhenney as Ronald "Mac" McDonald Kaitlin Olson as Deandra "Dee" ("Sweet Dee") Reynolds Danny DeVito as Frank Reynolds
Special guest cast Quinta Brunson as Janine Teagues Sheryl Lee Ralph as Barbara Howard Tyler James Williams as Gregory Eddie Janelle James as Ava Coleman Chris Perfetti as Jacob Hill Lisa Ann Walter as Melissa Schemmenti William Stanford Davis as Mr. Johnson Brian Unger as The Lawyer
Recurring cast Mary Elizabeth Ellis as The Waitress Lynne Marie Stewart as Bonnie Kelly
Guest cast Alex Wolff as Simon Audrey Wasilewski as Nurse Grayson Berry as Sparky Marlon Young as Louis David Hornsby as Matthew "Rickety Cricket" Mara Andrew Friedman as Uncle Jack Jaimie Alexander as Tammy Robert Adamson as Trey Artemis Pebdani as Artemis Eddie Shin as Moderator Mike Jesse Palmer as Himself Audrey Corsa as Cock Chewa Carol Kane as Sam
Production Development After the fourteenth season aired, It's Always Sunny in Philadelphia was renewed for four additional seasons in December 2020, intending to take it up to season 18. At the 75th Primetime Emmy Awards, series creator and showrunner Rob McElhenney and Quinta Brunson, the creator and star of the ABC sitcom Abbott Elementary, began developing a crossover between the two series, which was later approved by the Walt Disney Company CEO Bob Iger.
Writing On August 4, 2024, Charlie Day posted on Instagram that the writers' room would start working on the season in the following week. The writing team for the season includes Mac, Day, David Hornsby, Javi Scott, Nina Pedrad, and Keyonna Taylor.
Filming According to star Danny DeVito, filming for the season was expected to begin in September 2024. By October 16, it was announced via Instagram that filming had begun. On December 4, it was announced that filming for the season had finished.
Episodes
Release The season premiered with two episodes on July 9, 2025.
Reception On Rotten Tomatoes, the season has an approval rating of 84% based on 13 reviews with an average score of 7.45/10. The website's critics' consensus is, "Unlike Paddy's merry band of morons, It's Always Sunny in Philadelphia remains sharp and spry in its advanced age."
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