20 celebrities who have appeared on ‘It’s Always Sunny in Philadelphia’

Debuting in 2005, It’s Always Sunny in Philadelphia has become the underdog darling of television, as it’s the longest-running live-action sitcom with absolutely no accolades to its name (as far as the Emmys and Golden Globes are concerned — something the gang mentioned when they were finally invited to present at the 2024 Emmys). However, despite never getting the recognition it deserves from Hollywood elites, that doesn’t mean it hasn’t gotten major love from an abundance of famous faces who’ve found themselves appearing on the series over the years, from sitcom heavy hitters to directing dynamos. So let’s look at all the actors who’ve appeared on It’s Always Sunny in Philadelphia.