Alyson Lee Hannigan (born March 24, 1974) is an American actress. She is best known for her roles as Willow Rosenberg in the television series Buffy the Vampire Slayer (1997–2003), Lily Aldrin on the CBS sitcom How I Met Your Mother (2005–2014) and Michelle Flaherty in the American Pie film series (1999–present). Hannigan was born in Washington, D.C., the only child of Emilie (Posner) Haas, a real estate agent, and Al Hannigan, a truck driver. Her father is of Irish descent and her mother is Jewish. Her parents divorced when she was two and she was raised mostly by her mother in Atlanta, Georgia. Hannigan married fellow Buffy the Vampire Slayer actor Alexis Denisof at Two Bunch Palms Resort in Desert Hot Springs, California, on October 11, 2003. The couple have two daughters, Satyana Marie Denisof, born March 24, 2009, and Keeva Jane Denisof, born May 23, 2012. Hannigan and her husband are godparents to Joss Whedon's son, Arden. Description above from the Wikipedia article Alyson Hannigan, licensed under CC-BY-SA, full list of contributors on Wikipedia.
Series | Buffy the Animated Series | Willow Rosenberg | 2025 |
Movie | Office Race | Pat | 2023-09-04 |
Movie | Flora & Ulysses | Phyllis Buckman | 2021-02-19 |
Movie | Kim Possible | Dr. Ann Possible | 2019-02-15 |
Movie | You Might Be the Killer | Chuck | 2019-05-21 |
Movie | Abducted: The Mary Stauffer Story | Mary Stauffer | 2019-10-05 |
Series | Fancy Nancy | Claire Clancy (voice) | 2018-07-13 |
Movie | Do You Take This Man | Rachael | 2017-07-07 |
Series | The Gong Show | Herself - Judge | 2017-06-22 |
Series | Star Plates | 2016-09-27 | |
Movie | American Reunion | Michelle Flaherty-Levenstein | 2012-04-04 |
Series | Penn & Teller: Fool Us | Self - Host | 2011-01-07 |
Movie | More Business of Being Born | Self [Part 2,3] | 2011-11-08 |
Movie | Love, Wedding, Marriage | Courtney | 2011-06-03 |
Series | The Goode Family | Unknown | 2009-05-27 |
Series | The Bonnie Hunt Show | Unknown | 2008-09-08 |
Movie | Farce of the Penguins | Hottie Penguin (voice) | 2007-07-14 |
Movie | Date Movie | Julia Jones | 2006-02-17 |
Series | I Love the '70s: Volume 2 | Unknown | 2006-07-10 |
Series | The Megan Mullally Show | Unknown | 2006-09-18 |
Series | How I Met Your Mother | Lily Aldrin | 2005-09-19 |
Series | The Reichen Show | 2005-11-11 | |
Series | Veronica Mars | Unknown | 2004-09-22 |
Movie | American Pie: Revealed | Self | 2004-01-02 |
Series | The Ellen DeGeneres Show | Unknown | 2003-09-08 |
Movie | American Wedding | Michelle Flaherty | 2003-08-01 |
Movie | Playboy Mansion Parties Uncensored | Self | 2001-05-31 |
Movie | American Pie 2 | Michelle Flaherty | 2001-08-10 |
Movie | Beyond the City Limits | Lexi | 2001-12-17 |
Movie | Boys and Girls | Betty | 2000-06-16 |
Movie | American Pie | Michelle Flaherty | 1999-07-09 |
Series | The Late Late Show with Craig Kilborn | Unknown | 1999-03-30 |
Movie | Hayley Wagner, Star | Jenna Jakes | 1999-09-19 |
Series | 100 Deeds for Eddie McDowd | Unknown | 1999-10-16 |
Series | Angel | Willow Rosenberg | 1999-10-05 |
Movie | Dead Man on Campus | Lucy | 1998-08-21 |
Series | That '70s Show | Unknown | 1998-08-23 |
Series | The Wild Thornberrys | Unknown | 1998-09-01 |
Series | Buffy the Vampire Slayer | Willow Rosenberg | 1997-03-10 |
Movie | A Case for Life | Iris | 1996-02-18 |
Series | The Daily Show | Unknown | 1996-07-22 |
Movie | For My Daughter's Honor | Kelly | 1996-11-20 |
Series | MADtv | Unknown | 1995-10-14 |
Movie | The Stranger Beside Me | Dana | 1995-09-17 |
Series | Touched by an Angel | Unknown | 1994-09-21 |
Series | Late Night with Conan O'Brien | Unknown | 1993-09-13 |
Series | The Tonight Show with Jay Leno | Unknown | 1992-05-25 |
Series | The Torkelsons | Unknown | 1991-09-21 |
Movie | Switched at Birth | Gina Twigg, Age 13-16 | 1991-04-28 |
Series | The Simpsons | Unknown | 1989-12-17 |
Series | Free Spirit | Jessie Harper | 1989-09-22 |
Movie | My Stepmother Is an Alien | Jessie Mills | 1988-12-09 |
Series | Roseanne | Unknown | 1988-10-18 |
Movie | Impure Thoughts | Patty Stubbs (as Allison Hannigan) | 1986-11-25 |