Academy of Science Fiction, Fantasy & Horror Films, USA

Saturn Award [Winner] (2003)

Best Supporting Actress in a Television Series

Buffy the Vampire Slayer (1996)

Saturn Award [Nominee] (2002)

Best Supporting Actress in a Television Series

Buffy the Vampire Slayer (1996)

Saturn Award [Nominee] (2001)

Best Supporting Actress on Television

Buffy the Vampire Slayer (1996)

Online Film & Television Association

OFTA Television Award [Nominee] (2008)

Best Supporting Actress in a Comedy Series

How I Met Your Mother (2005)

OFTA Television Award [Nominee] (2001)

Best Supporting Actress in a Drama Series

Buffy the Vampire Slayer (1996)

People's Choice Awards, USA

People's Choice Award [Nominee] (2014)

Favorite TV Gal Pals
Lily & Robin

How I Met Your Mother (2005)

People's Choice Award [Nominee] (2011)

Favorite TV Comedy Actress

People's Choice Award [Winner] (2010)

Favorite TV Comedy Actress

Satellite Awards

Golden Satellite Award [Nominee] (2003)

Best Actress in a Supporting Role in a Series, Drama

Buffy the Vampire Slayer (1996)

SFX Awards, UK

SFX Award [Winner] (2003)

Best Science Fiction or Fantasy Actress

Buffy the Vampire Slayer (1996)

Teen Choice Awards

Teen Choice Award [Nominee] (2012)

Choice Movie Actress: Comedy

American Reunion (2012)

Teen Choice Award [Nominee] (2004)

Choice Movie Actress - Comedy

American Wedding (2003)

Teen Choice Award [Nominee] (2004)

Choice Movie Liplock

American Wedding (2003)

Teen Choice Award [Nominee] (2003)

Choice TV Sidekick

Buffy the Vampire Slayer (1996)

Teen Choice Award [Winner] (2002)

TV - Choice Sidekick

Buffy the Vampire Slayer (1996)

Teen Choice Award [Nominee] (2001)

TV - Choice Sidekick

Buffy the Vampire Slayer (1996)

Teen Choice Award [Nominee] (2000)

TV - Choice Sidekick

Buffy the Vampire Slayer (1996)

Teen Choice Award [Nominee] (1999)

TV - Choice Sidekick

Buffy the Vampire Slayer (1996)

TV Guide Awards

TV Guide Award [Nominee] (2001)

Supporting Actress of the Year in a Drama Series

Buffy the Vampire Slayer (1996)

Young Artist Awards

Young Artist Award [Nominee] (1990)

Best Young Actress Starring in a Television Series

Free Spirit (1989)

Young Artist Award [Nominee] (1989)

Best Young Actress in a Motion Picture Comedy or Fantasy

My Stepmother Is an Alien (1988)

Young Hollywood Awards

Young Hollywood Award [Winner] (2000)

Best Ensemble Cast

American Pie (1999)