
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.

The Emoji Movie
2017 · as Ronnie Ram Tech (voice)

Road to Perdition
2002 · as Peter Sullivan

Lemony Snicket's A Series of Unfortunate Events
2004 · as Klaus Baudelaire

Stepmom
1998 · as Ben Harrison

Sweet November
2001 · as Abner

Good Boy!
2003 · as Owen Baker

The Bloodhound
2020 · as Francis

The Killer Inside Me
2010 · as Johnnie Pappas

The Object of My Affection
1998 · as Nathan

Girls Against Boys
2012 · as Tyler

Fay Grim
2007 · as Ned Grim

I Dreamed of Africa
2000 · as 7-Year-Old Emanuele

Montana
1998 · as Kid

I Remember
1999 · as Joe (kid)

Like Lambs
2016 · as Charlie Masters

V13
2025 · as Hugo

Ned Rifle
2015 · as Ned Rifle

How to Be a Man
2013 · as Bryan