Sean Astin Awards

Academy Awards, USA

1995

Got nomination for Oscar
category Best Short Film, Live Action for Kangaroo Court (1994)
shared with Christine Astin

Academy of Science Fiction, Fantasy & Horror Films, USA

2004

Got nomination for Saturn Award
category Best Supporting Actor for The Lord of the Rings: The Return of the King (2003)

Broadcast Film Critics Association Awards

2004

Won BFCA Award
category Best Acting Ensemble for The Lord of the Rings: The Return of the King (2003)
shared with Orlando Bloom; Sean Bean; Bernard Hill

Chicago Film Critics Association Awards

2003

Got nomination for CFCA Award
category Best Supporting Actor for The Lord of the Rings: The Return of the King (2003)

DVD Exclusive Awards

2003

Got nomination for DVDX Award
category Best Audio Commentary (New for DVD) (Special Extended Edition) for The Lord of the Rings: The Two Towers (2002)
shared with Elijah Wood; John Rhys-Davies; Orlando Bloom

Empire Awards, UK

2004

Got nomination for Empire Award
category Best Actor for The Lord of the Rings: The Return of the King (2003)

Ft. Lauderdale International Film Festival

1995

Won Ft. Lauderdale International Film President Award
for The Low Life (1995)

Las Vegas Film Critics Society Awards

2004

Won Sierra Award
category Best Supporting Actor for The Lord of the Rings: The Return of the King (2003)

MTV Movie Awards

2003

Won MTV Movie Award
category Best On-Screen Team for The Lord of the Rings: The Two Towers (2002)
shared with Elijah Wood

National Board of Review, USA

2003

Won NBR Award
category Best Acting by an Ensemble for The Lord of the Rings: The Return of the King (2003)
shared with Sean Bean; Cate Blanchett; Hugo Weaving

Online Film Critics Society Awards

2004

Got nomination for OFCS Award
category Best Supporting Actor for The Lord of the Rings: The Return of the King (2003)

2003

Won OFCS Award
category Best Ensemble for The Lord of the Rings: The Two Towers (2002)
shared with Orlando Bloom; Dominic Monaghan; Viggo Mortensen

Phoenix Film Critics Society Awards

2004

Got nomination for PFCS Award
category Best Ensemble Acting for The Lord of the Rings: The Return of the King (2003)
shared with Elijah Wood; Cate Blanchett; Sean Bean

2004

Got nomination for PFCS Award
category Best Performance by an Actor in a Supporting Role for The Lord of the Rings: The Return of the King (2003)

2003

Won PFCS Award
category Best Acting Ensemble for The Lord of the Rings: The Two Towers (2002)
shared with Cate Blanchett; Orlando Bloom; Christopher Lee

2002

Won PFCS Award
category Best Acting Ensemble for The Lord of the Rings: The Fellowship of the Ring (2001)
shared with Cate Blanchett; Billy Boyd; Andy Serkis

Screen Actors Guild Awards

2004

Won Actor Award
category Outstanding Performance by a Cast in a Motion Picture for The Lord of the Rings: The Return of the King (2003)
shared with Sean Bean; Orlando Bloom; Elijah Wood

2003

Got nomination for Actor Award
category Outstanding Performance by the Cast of a Theatrical Motion Picture for The Lord of the Rings: The Two Towers (2002)
shared with Cate Blanchett; Orlando Bloom; Brad Dourif

2002

Got nomination for Actor Award
category Outstanding Performance by the Cast of a Theatrical Motion Picture for The Lord of the Rings: The Fellowship of the Ring (2001)
shared with Cate Blanchett; Billy Boyd; Orlando Bloom

Seattle Film Critics Awards

2003

Won Seattle Film Critics Award
category Best Supporting Actor for The Lord of the Rings: The Return of the King (2003)

Visual Effects Society Awards

2004

Won VES Award
category Outstanding Performance by a Male or Female Actor in an Effects Film for The Lord of the Rings: The Return of the King (2003)

2003

Won VES Award
category Best Performance by an Actor in an Effects Film for The Lord of the Rings: The Two Towers (2002)
shared with Andy Serkis; Elijah Wood

Young Artist Awards

1992

Got nomination for Young Artist Award
category Outstanding Young Ensemble Cast in a Motion Picture for Toy Soldiers (1991)
shared with Wil Wheaton; Keith Coogan; George Perez

1990

Won Young Artist Award
category Best Young Actor Starring in a Motion Picture for Staying Together (1989)

1986

Won Young Artist Award
category Best Starring Performance by a Young Actor - Motion Picture for The Goonies (1985)