| Awards | Year | Category | Film | Win/Nominated |
| Blockbuster Entertainment Awards | 1999 | Favorite Actress - Sci-Fi | Armageddon (1998) | Nominated |
| Broadcast Film Critics Association Awards | 2004 | Best Acting Ensemble | The Lord of the Rings: The Return of the King (2003) | Won |
| DVD Exclusive Awards | 2003 | Best Audio Commentary, New Release | The Lord of the Rings: The Fellowship of the Ring (2001) | Nominated |
| MTV Movie Awards | 1999 | Best Female Performance | Armageddon (1998) | Nominated |
| MTV Movie Awards | 1999 | Best On-Screen Duo | Armageddon (1998) | Nominated |
| National Board of Review, USA | 2003 | Best Acting by an Ensemble | The Lord of the Rings: The Return of the King (2003) | Won |
| Online Film Critics Society Awards | 2003 | Best Ensemble | The Lord of the Rings: The Two Towers (2002) | Won |
| Phoenix Film Critics Society Awards | 2004 | Best Ensemble Acting | The Lord of the Rings: The Return of the King (2003) | Nominated |
| Phoenix Film Critics Society Awards | 2003 | Best Ensemble Acting | The Lord of the Rings: The Lord of the Rings: The Two Towers (2002) | Won |
| Phoenix Film Critics Society Awards | 2002 | Best Ensemble Acting | The Lord of the Rings: The Fellowship of the Ring (2001) | Won |
| Razzie Awards | 2005 | Worst Screen Couple | Jersey Girl (2004) | Nominated |
| Razzie Awards | 1999 | Worst Screen Couple | Armageddon (1998) | Nominated |
| Russian Guild of Film Critics | 1999 | Best Foreign Actress | Onegin (1999) | Won |
| Screen Actors Guild Awards | 2004 | Outstanding Performance by a Cast in a Motion Picture | The Lord of the Rings: The Return of the King (2003) | Won |
| Screen Actors Guild Awards | 2003 | Outstanding Performance by the Cast of a Theatrical Motion Picture | The Lord of the Rings: The Two Towers (2002) | Nominated |
| Screen Actors Guild Awards | 2002 | Outstanding Performance by the Cast of a Theatrical Motion Picture | The Lord of the Rings: The Fellowship of the Ring (2001) | Nominated |
| Teen Choice Awards | 2004 | Choice Movie Actress - Drama/Action Adventure | The Lord of the Rings: The Return of the King (2003) | Nominated |
| Teen Choice Awards | 2002 | Film - Choice Actress, Drama/Action Adventure | The Lord of the Rings: The Fellowship of the Ring (2001) | Nominated |
| YoungStar Awards | 1997 | Best Performance by a Young Actress in a Drama Film | Stealing Beauty (1996) | Nominated |
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