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It’s Always Sunny in Philadelphia’ Starts Filming Season 18

A social media clapboard post from Rob McElhenney confirmed cameras are rolling.

Overview

  • Rob McElhenney shared a clapboard image captioned “Back in the kitchen,” signaling production has begun on the new season.
  • No premiere date or official trailer has been announced for Season 18.
  • The principal cast of Charlie Day, Rob McElhenney, Glenn Howerton, Kaitlin Olson, and Danny DeVito is expected to return, though no formal cast list is confirmed.
  • Details on the clapboard point to Todd Bierman directing during the upcoming season.
  • Lynne Marie Stewart, who played Charlie’s mom and died in early 2025, will not appear in the new episodes.