Actor profile

Alyson Hannigan

24th March 1974 Washington, District of Columbia, USA Acting

Alyson Lee Hannigan (born March 24, 1974) is an American actress and television presenter. She is best known for her roles as Willow Rosenberg in the television series Buffy the Vampire Slayer (1997–2003), as Lily Aldrin in the sitcom How I Met Your Mother (2005–2014) for which she won a People's Choice Award in 2009, and as Michelle Flaherty in the American Pie film series (1999–2012). Since 2016, Hannigan has hosted the television show Penn & Teller: Fool Us. She also provides the voice of Claire Clancy in the Disney Junior animated series Fancy Nancy (2018–present).

24 Movies 56 TV Shows 87 Credits

Filmography

Movies & TV Shows

Solo Mio poster

Solo Mio 5th February 2026 as Meghan

Office Race poster

Office Race 4th September 2023 as Pat

Flora & Ulysses poster

Flora & Ulysses 19th February 2021 as Phyllis

Abducted: The Mary Stauffer Story poster

Abducted: The Mary Stauffer Story 5th October 2019 as Mary Stauffer

You Might Be the Killer poster

You Might Be the Killer 21st May 2019 as Chuck

Kim Possible poster

Kim Possible 15th February 2019 as Dr. Ann Possible

Do You Take This Man poster

Do You Take This Man 7th July 2017 as Rachael

American Reunion poster

American Reunion 4th April 2012 as Michelle Levenstein

More Business of Being Born poster

More Business of Being Born 8th November 2011 as Self [Part 2,3]

Love, Wedding, Marriage poster

Love, Wedding, Marriage 3rd June 2011 as Courtney

Farce of the Penguins poster

Farce of the Penguins 1st December 2006 as Hottie Penguin (voice)

Date Movie poster

Date Movie 17th February 2006 as Julia Jones

American Pie: Revealed poster

American Pie: Revealed 2nd January 2004 as Self

American Wedding poster

American Wedding 1st August 2003 as Michelle Flaherty

Beyond the City Limits poster

Beyond the City Limits 17th December 2001 as Lexi

American Pie 2 poster

American Pie 2 10th August 2001 as Michelle Flaherty

Boys and Girls poster

Boys and Girls 16th June 2000 as Betty

Hayley Wagner, Star poster

Hayley Wagner, Star 19th September 1999 as Jenna Jakes

American Pie poster

American Pie 9th July 1999 as Michelle Flaherty

Dead Man on Campus poster

Dead Man on Campus 21st August 1998 as Lucy

For My Daughter's Honor poster

For My Daughter's Honor 20th November 1996 as Kelly

The Stranger Beside Me poster

The Stranger Beside Me 17th September 1995 as Dana

My Stepmother Is an Alien poster

My Stepmother Is an Alien 9th December 1988 as Jessie Mills

Impure Thoughts poster

Impure Thoughts 25th November 1986 as Patty Stubbs

Dancing with the Stars Official Podcast poster

Dancing with the Stars Official Podcast 18th September 2025 as Self

Doogie Kamealoha, M.D. poster

Doogie Kamealoha, M.D. 8th September 2021 as Dawn

Adorableness poster

Adorableness 19th July 2021 as Self

Outrageous Pumpkins poster

Outrageous Pumpkins 20th September 2020 as Self - Host

Girl Scout Cookie Championship poster

Girl Scout Cookie Championship 3rd February 2020 as Self - Host

Outmatched poster

Outmatched 23rd January 2020 as Beth

The Kelly Clarkson Show poster

The Kelly Clarkson Show 9th September 2019 as Self

Fancy Nancy: Fancy It Yourself poster

Fancy Nancy: Fancy It Yourself 8th April 2019 as Nancy

Fancy Nancy poster

Fancy Nancy 13th July 2018 as Claire Clancy (voice)

The Gong Show poster

The Gong Show 22nd June 2017 as Self - Judge

Star Plates poster

Star Plates 27th September 2016

The $100,000 Pyramid poster

The $100,000 Pyramid 27th June 2016 as Self

Beat Bobby Flay poster

Beat Bobby Flay 24th August 2013 as Self

Hollywood Game Night poster

Hollywood Game Night 11th July 2013 as Self

Sofia the First poster

Sofia the First 11th January 2013 as (voice)

Penn & Teller: Fool Us poster

Penn & Teller: Fool Us 7th January 2011 as Self - Host

Watch What Happens Live with Andy Cohen poster

Watch What Happens Live with Andy Cohen 16th July 2009 as Self - Guest

The Goode Family poster

The Goode Family 27th May 2009

The Bonnie Hunt Show poster

The Bonnie Hunt Show 8th September 2008 as Self

Buffy the Animated Series poster

Buffy the Animated Series 1st August 2008 as Willow Rosenberg

The Megan Mullally Show poster

The Megan Mullally Show 18th September 2006 as Self - Guest

I Love the '70s: Volume 2 poster

I Love the '70s: Volume 2 10th July 2006 as Self

How I Met Your Mother poster

How I Met Your Mother 19th September 2005 as Lily Aldrin

Dancing with the Stars poster

Dancing with the Stars 1st June 2005 as Self - Contestant

Dancing with the Stars poster

Dancing with the Stars 1st June 2005 as Self - Audience Member

Dancing with the Stars poster

Dancing with the Stars 1st June 2005 as Self - Rehearsal Visitor

Robot Chicken poster

Robot Chicken 20th February 2005 as Steelheart (voice)

American Dad! poster

American Dad! 6th February 2005 as Lexie (voice)

American Dad! poster

American Dad! 6th February 2005 as Ugly Stepsister #2 (voice)

American Dad! poster

American Dad! 6th February 2005 as Chelsea (voice)

Veronica Mars poster

Veronica Mars 22nd September 2004 as Trina Echolls

The Ellen DeGeneres Show poster

The Ellen DeGeneres Show 8th September 2003 as Self

Jimmy Kimmel Live! poster

Jimmy Kimmel Live! 26th January 2003 as Self - Guest

100 Deeds for Eddie McDowd poster

100 Deeds for Eddie McDowd 16th October 1999

Angel poster

Angel 5th October 1999 as Willow Rosenberg

Teen Choice Awards poster

Teen Choice Awards 1st August 1999 as Self

The Late Late Show with Craig Kilborn poster

The Late Late Show with Craig Kilborn 30th March 1999 as Self - Guest

The Wild Thornberrys poster

The Wild Thornberrys 1st September 1998 as Gerda (voice)

That '70s Show poster

That '70s Show 23rd August 1998 as Suzy Simpson

Buffy the Vampire Slayer poster

Buffy the Vampire Slayer 10th March 1997 as Willow Rosenberg

King of the Hill poster

King of the Hill 12th January 1997 as Stacey Gibson (voice)

The Daily Show poster

The Daily Show 22nd July 1996 as Self - Guest

TFI Friday poster

TFI Friday 9th February 1996

Touched by an Angel poster

Touched by an Angel 21st September 1994 as Cassie Peters

Late Night with Conan O'Brien poster

Late Night with Conan O'Brien 13th September 1993 as Self - Guest

Late Show with David Letterman poster

Late Show with David Letterman 30th August 1993 as Self - Guest

Late Show with David Letterman poster

Late Show with David Letterman 30th August 1993 as Self - Top Ten Presenter

Picket Fences poster

Picket Fences 18th September 1992 as Peggy Patterson

MTV Movie & TV Awards poster

MTV Movie & TV Awards 10th June 1992 as Self - Presenter

The Tonight Show with Jay Leno poster

The Tonight Show with Jay Leno 25th May 1992

The Torkelsons poster

The Torkelsons 21st September 1991 as Samantha

Rugrats poster

Rugrats 11th August 1991 as Cynthia P.I. (voice)

The Simpsons poster

The Simpsons 17th December 1989 as Melody Juniper (voice)

Free Spirit poster

Free Spirit 22nd September 1989 as Jessie Harper

Roseanne poster

Roseanne 18th October 1988

Entertainment Tonight poster

Entertainment Tonight 15th September 1981 as Self