Films
| 1989 || ''Back to the Future Part'' || Video-Game Boy #2 (Mickey) || bit part
| 1990 || ''Child in the Night'' || Luke || TV film
| 1990 || ''Internal Affairs'' || Sean Stretch || minor role
| 1990 || ''Avalon'' || Michael Kaye || major role
| 1990 || ''The Witness (short film)'' || Little Boy || short film
| 1991 || ''Paradise'' || Willard Young || Major Role,10 year old boy visitor
| 1992 || ''Day-O'' || Dayo || Made for TV film
| 1992 || ''Forever Young'' || Nat Cooper || Major role
| 1992 || ''Radio Flyer'' || Mike || Major role
| 1993 || ''The Adventures of Huck Finn'' || Huckleberry Finn|| Major role
| 1993 || ''The Good Son'' || Mark Evans || Major role
| 1994 || ''North'' || North || Major role
| 1994 || ''The War'' || Stuart "Stu" Simmons || Major role
| 1996 || ''Flipper'' || Sandy Ricks || Major role
| 1997 || ''Oliver Twist'' || Jack "The Artful Dodger" Dawkins || TV film. Wood's first adult role
| 1997 || ''The Ice Storm'' || Mikey Carver ||
| 1998 || ''Deep Impact'' || Leo Biederman ||
| 1998 || ''The Faculty'' || Casey Connor ||
| 1999 || ''The Bumblebee Flies Anyway'' || Barney Snow || Major role
| 1999 || ''Black and White'' || Wren ||
| 2000 || ''Chain of Fools'' || Mikey || Direct-to-video
| 2001 || ''The Lord of the Rings: The Fellowship of the Ring|| [[Frodo Baggins]] || Major role
| 2001 || ''Ash Wednesday'' || Sean Sullivan ||
| 2002 || ''The Lord of the Rings: The Two Towers'' || [[Frodo Baggins]] || Major role
| 2002 || ''The Adventures of Tom Thumb and Thumbelina'' || Tom Thumb || voice; Direct-to-video
| 2002 || ''All I Want aka Try Seventeen'' || Jones Dillon || Direct-to-video
| 2003 || ''The Lord of the Rings: The Return of the King'' || [[Frodo Baggins]] || Major role
| 2003 || ''The Long and Short of It'' || First Assistant Director || Short film
| 2003 || ''Spy Kids 3-D: Game Over'' || The Guy || Cameo
| 2004 || ''Eternal Sunshine of the Spotless Mind'' || Patrick ||
| 2005 || ''Sin City'' || Kevin ||
| 2005 || ''Everything Is Illuminated'' || Jonathan Safran Foer || Major role
| 2005 || ''Green Street'' || Matt Buckner || Major role
| 2006 || ''Bobby'' || William Avary ||
| 2006 || ''Happy Feet'' || Mumble || voice
| 2007 || ''Paris, je t'aime'' || David ||
| 2007 || ''Day Zero'' || Aaron Feller ||
| 2008 || ''The Oxford Murders'' || Martin || Major role
| 2009 || ''9'' || voice
| 2010 || ''The Romantics'' || Chip ||
| 2011 || ''Fight For Your Right Revisited'' || Ad Rock || Short film
| 2011 || ''Happy Feet Two'' || Mumble || voice
| 2012 || ''The Death & Return of Superman'' || Hank Henshaw (Cyborg Superman) || Short film
| 2012 || ''Celeste and Jesse Forever'' || Scott || Premiere at Sundance Film Festival January 2012
| 2012 || ''Revenge For Jolly'' || Thomas ||
| 2012 || ''The Hobbit: An Unexpected Journey'' || Frodo Baggins || Filming
| 2012 || ''Maniac'' || Frank ||
| 2013 || ''The Hobbit: There And Back Again (2012 film)'' || [[Frodo Baggins]] || Filming