| 1995 |
YoungStar Awards
Best Performance by a Young Actor in a Drama Film The War (1994) |
Nominee |
| 1997 |
YoungStar Awards
Best Performance by a Young Actor in a Comedy Film Flipper (1996) |
Nominee |
| 1998 |
YoungStar Awards
Best Performance by a Young Actor in a Drama Film Deep Impact (1998) | Best Performance by a Young Actor in a Miniseries/Made-for-TV Movie Oliver Twist (1997) |
Won |
| 2002 |
Young Hollywood Awards
Hottest, Coolest Young Veteran - Male |
Won |
| 1991 |
Young Artist Awards
Best Young Actor Starring in a TV Movie, Pilot or Special Child in the Night (1990) | Best Young Actor Starring in a Motion Picture Avalon (1990) |
Nominee |
| 1992 |
Young Artist Awards
Best Young Actor Starring in a Motion Picture Paradise (1991) |
Nominee |
| 1993 |
Young Artist Awards
Best Young Actor Starring in a Motion Picture Radio Flyer (1992) |
Won |
| 1995 |
Young Artist Awards
Best Performance by a Young Actor Starring in a Motion Picture North (1994) |
Nominee |
| 1997 |
Young Artist Awards
Best Performance in a Drama Series - Guest Starring Young Actor Homicide: Life on the Street (1993) |
Nominee |
| 1998 |
Young Artist Awards
Best Performance in a Feature Film - Supporting Young Actor The Ice Storm (1997) |
Nominee |
| 2004 |
Washington DC Area Film Critics Association Awards
Best Acting Ensemble Eternal Sunshine of the Spotless Mind (2004) |
Won |
| 2003 |
Visual Effects Society Awards
Best Performance by an Actor in an Effects Film The Lord of the Rings: The Two Towers (2002) |
Won |
| 2019 |
Toronto After Dark Film Festival
Best Male Actor in a Leading Role Come to Daddy (2019) |
Won |
| 2002 |
Teen Choice Awards
Film - Choice Actor, Drama/Action Adventure The Lord of the Rings: The Fellowship of the Ring (2001) |
Nominee |
| 2003 |
Teen Choice Awards
Choice Movie Actor - Drama/Action Adventure The Lord of the Rings: The Two Towers (2002) |
Nominee |
| 2004 |
Teen Choice Awards
Choice Movie Actor - Drama/Action Adventure The Lord of the Rings: The Return of the King (2003) |
Nominee |
| 2005 |
Teen Choice Awards
Choice Movie Bad Guy Sin City (2005) |
Nominee |
| 2014 |
Stanley Film Festival
Visionary Award Shared with: Daniel Noah Josh C. Waller |
Won |
| 1994 |
ShoWest Convention
Young Star of the Year |
Won |
| 2003 |
SFX Awards
Best SF or Fantasy Film Actor The Lord of the Rings: The Two Towers (2002) |
Nominee |
| 2002 |
Screen Actors Guild Awards
Outstanding Performance by the Cast of a Theatrical Motion Picture The Lord of the Rings: The Fellowship of the Ring (2001) |
Nominee |
| 2003 |
Screen Actors Guild Awards
Outstanding Performance by the Cast of a Theatrical Motion Picture The Lord of the Rings: The Two Towers (2002) |
Nominee |
| 2004 |
Screen Actors Guild Awards
Outstanding Performance by a Cast in a Motion Picture The Lord of the Rings: The Return of the King (2003) |
Won |
| 2007 |
Screen Actors Guild Awards
Outstanding Performance by a Cast in a Motion Picture Bobby (2006) |
Nominee |
| 2011 |
Satellite Awards
Best Actor in a Series, Comedy or Musical Wilfred (2011) |
Nominee |
| 2002 |
Phoenix Film Critics Society Awards
Best Acting Ensemble The Lord of the Rings: The Fellowship of the Ring (2001) |
Won |
| 2003 |
Phoenix Film Critics Society Awards
Best Acting Ensemble The Lord of the Rings: The Two Towers (2002) |
Won |
| 2004 |
Phoenix Film Critics Society Awards
Best Ensemble Acting The Lord of the Rings: The Return of the King (2003) |
Nominee |
| 2003 |
Online Film Critics Society Awards
Best Ensemble The Lord of the Rings: The Two Towers (2002) |
Won |
| 2005 |
Online Film & Television Association
Best Ensemble Eternal Sunshine of the Spotless Mind (2004) |
Nominee |
| 2012 |
Online Film & Television Association
Best Actor in a Comedy Series Wilfred (2011) |
Nominee |
| 2015 |
NAVGTR Awards
Performance in a Comedy, Lead Broken Age (2014) as "Shay" |
Won |
| 2003 |
National Board of Review
Best Acting by an Ensemble The Lord of the Rings: The Return of the King (2003) |
Won |
| 2019 |
Music City Film Critics' Association Awards
Best Horror Film Mandy (2018) |
Nominee |
| 2002 |
MTV Movie + TV Awards
Best Male Performance The Lord of the Rings: The Fellowship of the Ring (2001) |
Nominee |
| 2003 |
MTV Movie + TV Awards
Best On-Screen Team The Lord of the Rings: The Two Towers (2002) Shared with: Sean Astin |
Won |
| 2002 |
Kids' Choice Awards
Favorite Male Action Hero The Lord of the Rings: The Fellowship of the Ring (2001) |
Nominee |
| 2003 |
Kids' Choice Awards
Favorite Male Butt Kicker The Lord of the Rings: The Two Towers (2002) |
Nominee |
| 2005 |
International Online Cinema Awards
Best Ensemble Cast Eternal Sunshine of the Spotless Mind (2004) |
Nominee |
| 2006 |
Hollywood Film Awards
Ensemble of the Year Bobby (2006) |
Won |
| 2001 |
Golden Schmoes Awards
Breakthrough Performance of the Year The Lord of the Rings: The Fellowship of the Ring (2001) |
Nominee |
| 2003 |
Gold Derby Awards
Ensemble Cast The Lord of the Rings: The Two Towers (2002) |
Nominee |
| 2004 |
Gold Derby Awards
Ensemble Cast The Lord of the Rings: The Return of the King (2003) |
Won |
| 2005 |
Gold Derby Awards
Ensemble Cast Eternal Sunshine of the Spotless Mind (2004) |
Nominee |
| 2006 |
Gold Derby Awards
Ensemble Cast Sin City (2005) |
Nominee |
| 2013 |
Fright Meter Awards
Best Actor Maniac (2012) |
Won |
| 2020 |
Fright Meter Awards
Best Actor Come to Daddy (2019) |
Nominee |
| 2014 |
Fangoria Chainsaw Awards
Best Actor Maniac (2012) |
Won |
| 2002 |
Empire Awards
Best Actor The Lord of the Rings: The Fellowship of the Ring (2001) |
Won |
| 2003 |
DVD Exclusive Awards
Best Audio Commentary (New for DVD) The Lord of the Rings: The Two Towers (2002) |
Nominee |
| 2003 |
DVD Exclusive Awards
Best Audio Commentary, New Release The Lord of the Rings: The Fellowship of the Ring (2001) | Best Animated Character Performance The Adventures of Tom Thumb & Thumbelina (2002) |
Nominee |
| 2007 |
Daytime Emmy Awards
Outstanding Performer in a Children/Youth/Family Special Saving a Species: The Great Penguin Rescue (2006) For playing "Host". |
Nominee |
| 2019 |
CinEuphoria Awards
Best Film - International Competition Mandy (2018) |
Won |
| 1992 |
Chicago Film Critics Association Awards
Most Promising Actor Paradise (1991) |
Nominee |
| 2004 |
Broadcast Film Critics Association Awards
Best Acting Ensemble The Lord of the Rings: The Return of the King (2003) |
Won |
| 2006 |
Broadcast Film Critics Association Awards
Best Acting Ensemble Sin City (2005) |
Nominee |
| 2007 |
Broadcast Film Critics Association Awards
Best Acting Ensemble Bobby (2006) |
Nominee |
| 2002 |
Bravo Otto
Best Actor (Schauspieler) |
Nominee |
| 2003 |
Bravo Otto
Best Actor (Schauspieler) |
Nominee |
| 1999 |
Blockbuster Entertainment Awards
Favorite Actor - Horror The Faculty (1998) | Favorite Supporting Actor - Sci-Fi Deep Impact (1998) |
Nominee |
| 2015 |
Behind the Voice Actors Awards
Best Male Lead Vocal Performance in a Television Series - Comedy/Musical Over the Garden Wall (2014) | Best Vocal Ensemble in a New Television Series Over the Garden Wall (2014) |
Nominee |
| 2015 |
Behind the Voice Actors Awards
Best Male Lead Vocal Performance in a Video Game Broken Age (2014) As the voice of "Shay" |
Nominee |
| 2015 |
Behind the Voice Actors Awards
Best Vocal Ensemble in a New Television Series Over the Garden Wall (2014) |
Won |
| 2001 |
Awards Circuit Community Awards
Best Cast Ensemble The Lord of the Rings: The Fellowship of the Ring (2001) |
Won |
| 2002 |
Awards Circuit Community Awards
Best Cast Ensemble The Lord of the Rings: The Two Towers (2002) |
Nominee |
| 2003 |
Awards Circuit Community Awards
Best Cast Ensemble The Lord of the Rings: The Return of the King (2003) |
Won |
| 2004 |
Awards Circuit Community Awards
Best Cast Ensemble Eternal Sunshine of the Spotless Mind (2004) |
Nominee |
| 1994 |
Academy of Science Fiction, Fantasy & Horror Films
Best Performance by a Younger Actor The Good Son (1993) |
Won |
| 1995 |
Academy of Science Fiction, Fantasy & Horror Films
Best Performance by a Younger Actor North (1994) |
Nominee |
| 2003 |
Academy of Science Fiction, Fantasy & Horror Films
Best Performance by a Younger Actor The Lord of the Rings: The Two Towers (2002) |
Nominee |
| 2004 |
Academy of Science Fiction, Fantasy & Horror Films
Best Actor The Lord of the Rings: The Return of the King (2003) |
Won |
| 2004 |
Academy of Interactive Arts & Sciences
Outstanding Achievement in Character Performance – Male The Lord of the Rings: The Return of the King (2003) |
Won |
Script developed by Never Enough Design