Mary Elizabeth Ellis

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Mary Elizabeth Ellis
Mary Elizabeth Ellis by Gage Skidmore.jpg
Born (1979-05-11) May 11, 1979 (age 40)
Alma materSouthern Methodist University
Charlie Day (m. 2006)

Mary Elizabeth Ellis is an American actress and writer. She is best known for her role as The Waitress on the FX sitcom It's Always Sunny in Philadelphia. She has also starred in the NBC sitcom Perfect Couples and the Fox sitcom The Grinder. She also starred as Nick's ex-girlfriend in the series New Girl. Since 2017, she has starred as Lisa Palmer on the Netflix horror-comedy Santa Clarita Diet.

Early life[edit]

Ellis was born in Laurel, Mississippi. She graduated from Southern Methodist University in 2002.[1]


Ellis has appeared in a number of television series, including The Grinder, Cold Case, Without a Trace, House, Happy Endings, New Girl, Reno 911!, and the Netflix original series Santa Clarita Diet. She is best known for her role as The Waitress on the FX comedy series It's Always Sunny in Philadelphia.

In 2008, she co-wrote and starred in the independent film A Quiet Little Marriage. Ellis and Artemis Pebdani wrote and starred together in the stage show Mother May I Dance with Mary Jane's Fist?: A Lifetime Original Play at the Upright Citizens Brigade Theater in Los Angeles, California. In addition, Ellis and Pebdani are members of the Los Angeles-based performance group Discount Cruise to Hell.[2]

Ellis was a series regular on the NBC romantic comedy series Perfect Couples, which ran for one season in 2011.[3][4][5] Ellis also stars in The Lonely Island's music video for the song "Diaper Money".

In 2015 Ellis got her first main role as Debbie Sanderson, co-starring with Fred Savage and Rob Lowe in The Grinder.

Personal life[edit]

Ellis married her It's Always Sunny in Philadelphia co-star Charlie Day on March 4, 2006. Their first child, a boy named Russell Wallace Day, was born on December 15, 2011.[6][7]



Year Title Role Notes
2008 A Quiet Little Marriage Olive
2009 Pulling Karen
2014 The Last Time You Had Fun Alison
2016 Free State of Jones Margaret
2016 Masterminds Michelle Chambers
2018 The Truth About Lies Sharon
TBA El Tonto Post-production


Year Title Role Notes
2004 Cracking Up Jennifer Episode: "Panic House"
2004 Reno 911! Inbred Twin Episode: "Not Without My Mustache"
2005–18 It's Always Sunny in Philadelphia The Waitress 31 episodes
2006 House Sophie Episode: "Que Será Será"
2007 Without a Trace Sally Price Episode: "Skin Deep"
2009 Old Friends Portia Bridges Episode: "Introductions"
2009 Cold Case Shelly Reid Episode: "Lotto Fever"
2010–11 Perfect Couples Amy 11 episodes
2011–14 New Girl Caroline 6 episodes
2012 Georgia Georgia 3 episodes
2012 Up All Night Connie Chafin 2 episodes
2012–13 Happy Endings Daphne Wilson 2 episodes
2013 The Millers Debbie Unsold TV pilot
2013 Brooklyn Nine-Nine Dr. Rossi Episode: "M.E. Time"
2014–16 Comedy Bang! Bang! Various 2 episodes
2015 Drunk History Dorothy Fuldheim Episode: "Cleveland"
2015–16 The Grinder Debbie Sanderson 22 episodes
2017 Animals. Wendy (voice) Episode: "Roaches"
2017–19 Santa Clarita Diet Lisa Palmer 15 episodes
2019 The Cool Kids M.J. Episode: "Margaret Jr."


Year Title Role Venue
2001 The Tempest Ariel PCPA Theaterfest
2002 Killer Joe Dotty Artists Repertory Theatre Portland
2015 Trevor Ashley Circle X Theatre Co.


  1. ^ "2001-2002 Class Notes". SMU Magazine 2013. 2013. Retrieved 1 January 2016.
  2. ^ Conversations with Ross: Featuring Mary Elizabeth Ellis
  3. ^ "NBC TV show ratings" (Press release). NBC Universal. Jan 27, 2011. Retrieved May 12, 2010.
  4. ^ [1] Archived May 21, 2011, at the Wayback Machine
  5. ^ "Television News, Reviews and TV Show Recaps – HuffPost TV". Retrieved 2013-12-31.
  6. ^ Wedemeyer, Jessica (2011-07-23). "Charlie Day, Mary Elizabeth Ellis Expecting a Baby". Retrieved 2013-12-31.
  7. ^ Actors Charlie Day & Mary Elizabeth Ellis Welcome A Baby Boy[permanent dead link]

External links[edit]