Liam Padraic Aiken (born January 7, 1990) is an American actor who has starred in a number of films, such as Stepmom and Good Boy!. He starred as Klaus Baudelaire in Lemony Snicket's A Series of Unfortunate Events, based on the series of books.

Filmography

• 2025Montauk — J.R.
• 2025V13 — Hugo
• 2024ChickenMan — ChickenMan
• 2021Bashira — Andy Monrovia
• 2020The Bloodhound — Francis
• 2017The Emoji Movie — Ronnie Ram Tech (voice)
• 2017The Honor Farm — Sinclair
• 2016Like Lambs — Charlie Masters
• 2016The Frontier — Eddie
• 2015Let Me Down Easy — Hezekiah
• 2015Ned Rifle — Ned Rifle
• 2015Weepah Way For Now — Reed
• 2013How to Be a Man — Bryan
• 2013Munchausen — Son
• 2012Electrick Children — Mr Will
• 2012Girls Against Boys — Tyler
• 2012Nor'easter — Josh Green
• A Gifted Man — Milo
• 2010The Killer Inside Me — Johnnie Pappas
• 2007Fay Grim — Ned Grim
• Mad Men — Rolo
• 2004Lemony Snicket's A Series of Unfortunate Events — Klaus Baudelaire
• 2003Good Boy! — Owen Baker
• 2002Road to Perdition — Peter Sullivan
• Law & Order: Criminal Intent — Robbie Bishop, Jason
• 2001Sweet November — Abner
• 2001The Rising Place — Emmett Wilder
• 2000I Dreamed of Africa — 7-Year-Old Emanuele
• 1999I Remember — Joe (kid)
• 1998Henry Fool — Ned
• 1998Montana — Kid
• 1998Stepmom — Ben Harrison
• 1998The Object of My Affection — Nathan
• Law & Order — Tory Quinlann, Jack Ericson, Thomas Norton
• A Soldier's Heart
• Cleveland. — Ethan

Appearances as themselves (1)

• 2007The Making of 'Fay Grim' or: How Do You Spell Espionage? — Himself