Mike Hagerty was an American actor.

He was best known for playing comedic blue-collar workers, including his recurring roles as Mr. Treeger, the building superintendent, on Friends and the manager of a muffler shop on HBO's Lucky Louie.

He began his screen acting career in the 1973 adventure film The Timber Tramps, and went on to appear throughout the '80s and '90s in TV shows including Cheers, Crime Story, Married ... With Children, Family Ties, Murphy Brown and The Wonder Years.

He played the role of Finley in comedy series The Building and then went on to appear in Star Trek: The Next Generation, Seinfeld and The George Carlin Show.

Later credits included Entourage, Boston Legal, CSI: Crime Scene Investigation, Glee, The Mindy Project, Grey's Anatomy, Community, Shameless and Brooklyn Nine-Nine.

HBO's Somebody Somewhere was Hagerty's final credit.

Hagerty died April 29, 2022, in Los Angeles, California. He was 67.