Alyson Hannigan Awards

Academy of Science Fiction, Fantasy & Horror Films, USA

2003

Won Saturn Award
category Best Supporting Actress in a Television Series for Buffy the Vampire Slayer (1997) (TV)

2002

Got nomination for Saturn Award
category Best Supporting Actress in a Television Series for Buffy the Vampire Slayer (1997) (TV)

2001

Got nomination for Saturn Award
category Best Supporting Actress on Television for Buffy the Vampire Slayer (1997) (TV)

People's Choice Awards, USA

2010

Got nomination for People's Choice Award
category Favorite TV Comedy Actress

Satellite Awards

2003

Got nomination for Golden Satellite Award
category Best Performance by an Actress in a Supporting Role in a Series, Drama for Buffy the Vampire Slayer (1997) (TV)

Teen Choice Awards

2004

Got nomination for Teen Choice Award
category Choice Movie Actress - Comedy for American Wedding (2003)

2004

Got nomination for Teen Choice Award
category Choice Movie Liplock for American Wedding (2003)
shared with Jason Biggs

2003

Got nomination for Teen Choice Award
category Choice TV Sidekick for Buffy the Vampire Slayer (1997) (TV)

2002

Won Teen Choice Award
category TV - Choice Sidekick for Buffy the Vampire Slayer (1997) (TV)

2001

Got nomination for Teen Choice Award
category TV - Choice Sidekick

2000

Got nomination for Teen Choice Award
category TV - Choice Sidekick for Buffy the Vampire Slayer (1997) (TV)

TV Guide Awards

2001

Got nomination for TV Guide Award
category Supporting Actress of the Year in a Drama Series for Buffy the Vampire Slayer (1997) (TV)

Young Artist Awards

1990

Got nomination for Young Artist Award
category Best Young Actress Starring in a Television Series for Free Spirit (1989) (TV)

1989

Got nomination for Young Artist Award
category Best Young Actress in a Motion Picture Comedy or Fantasy for My Stepmother Is an Alien (1988)