Alyson Hannigan
Biography
Alyson Hannigan is an American actress and television presenter born on March 24, 1974, in Washington, District of Columbia, USA. She is known for her roles in various television series and film projects. She has appeared in the television series Buffy the Vampire Slayer and How I Met Your Mother, and in the American Pie film series. Hannigan has also provided the voice of Claire Clancy in the Disney Junior animated series Fancy Nancy. Additionally, she hosts the television show Penn & Teller: Fool Us, a role she has held since 2016. With a career spanning multiple mediums, Hannigan has accumulated a significant number of acting credits, totaling 82 known credits.
Career overview
Alyson Hannigan is an American actress. She began her acting career with notable roles in television series and film. One of her most well-known roles is in the television series Buffy the Vampire Slayer, which aired from 1997 to 2003. She also appeared in the sitcom How I Met Your Mother, where she played the character Lily Aldrin from 2005 to 2014.
In addition to her television work, Hannigan has also appeared in the American Pie film series, playing the role of Michelle Flaherty. This film series ran from 1999 to 2012. Her performances in these films and television shows have contributed to her recognition as an actress.
Hannigan's career has also extended to hosting and voice acting. She has hosted the television show Penn & Teller: Fool Us since 2016. Additionally, she provides the voice of Claire Clancy in the Disney Junior animated series Fancy Nancy, which premiered in 2018 and continues to air. Throughout her career, Hannigan has demonstrated her versatility as an actress, taking on a range of roles in different mediums.
Ask the Vault
Ask anything about Alyson Hannigan.
Frequent co-stars
Career timeline
Full filmography
- Solo Mio (2026) as Meghan
- Dancing with the Stars Official Podcast (2025) as Self
- Office Race (2023) as Pat
- Doogie Kamealoha, M.D. (2021) as Dawn
- Flora & Ulysses (2021) as Phyllis
- Adorableness (2021) as Self
- Outmatched (2020) as Beth
- Outrageous Pumpkins (2020) as Self - Host
- Girl Scout Cookie Championship (2020) as Self - Host
- The Kelly Clarkson Show (2019) as Self
- Kim Possible (2019) as Dr. Ann Possible
- You Might Be the Killer (2019) as Chuck
- Abducted: The Mary Stauffer Story (2019) as Mary Stauffer
- Fancy Nancy: Fancy It Yourself (2019) as Nancy
- Fancy Nancy (2018) as Claire Clancy (voice)
- Man of the House (2018) as Jessie
- The Gong Show (2017) as Self - Judge
- Do You Take This Man (2017) as Rachael
- The $100,000 Pyramid (2016) as Self
- Star Plates (2016)
- Beat Bobby Flay (2013) as Self
- Sofia the First (2013) as (voice)
- Hollywood Game Night (2013) as Self
- American Reunion (2012) as Michelle Levenstein
- Penn & Teller: Fool Us (2011) as Self - Host
- Penn & Teller: Fool Us (2011) Producer
- Love, Wedding, Marriage (2011) as Courtney
- More Business of Being Born (2011) as Self [Part 2,3]
- Watch What Happens Live with Andy Cohen (2009) as Self - Guest
- The Goode Family (2009)
- The Bonnie Hunt Show (2008) as Self
- Buffy the Animated Series (2008) as Willow Rosenberg
- The Megan Mullally Show (2006) as Self - Guest
- Date Movie (2006) as Julia Jones
- I Love the '70s: Volume 2 (2006) as Self
- Farce of the Penguins (2006) as Hottie Penguin (voice)
- American Dad! (2005) as Lexie (voice)
- American Dad! (2005) as Ugly Stepsister #2 (voice)
- American Dad! (2005) as Chelsea (voice)
- How I Met Your Mother (2005) as Lily Aldrin
- Dancing with the Stars (2005) as Self - Contestant
- Dancing with the Stars (2005) as Self - Audience Member
- Dancing with the Stars (2005) as Self - Rehearsal Visitor
- Robot Chicken (2005) as Steelheart (voice)
- The Reichen Show (2005) as Self
- Veronica Mars (2004) as Trina Echolls
- American Pie: Revealed (2004) as Self
- American Pie: Revealed (2004) Thanks
- Jimmy Kimmel Live! (2003) as Self
- Jimmy Kimmel Live! (2003) as Self - Guest
- The Ellen DeGeneres Show (2003) as Self
- American Wedding (2003) as Michelle Flaherty
- Pepsi Smash (2003) as Self - Host
- American Pie 2 (2001) as Michelle Flaherty
- Playboy Mansion Parties Uncensored (2001) as Self
- Beyond the City Limits (2001) as Lexi
- Boys and Girls (2000) as Betty
- Angel (1999) as Willow Rosenberg
- American Pie (1999) as Michelle Flaherty
- The Late Late Show with Craig Kilborn (1999) as Self - Guest
- 100 Deeds for Eddie McDowd (1999)
- Hayley Wagner, Star (1999) as Jenna Jakes
- Teen Choice Awards (1999) as Self
- That '70s Show (1998) as Suzy Simpson
- The Wild Thornberrys (1998) as Gerda (voice)
- Dead Man on Campus (1998) as Lucy
- King of the Hill (1997) as Stacey Gibson (voice)
- Buffy the Vampire Slayer (1997) as Willow Rosenberg
- The Daily Show (1996) as Self - Guest
- For My Daughter's Honor (1996) as Kelly
- A Case for Life (1996) as Iris
- The Stranger Beside Me (1995) as Dana
- Touched by an Angel (1994) as Cassie Peters
- Late Show with David Letterman (1993) as Self - Guest
- Late Show with David Letterman (1993) as Self - Top Ten Presenter
- Late Night with Conan O'Brien (1993) as Self - Guest
- The Tonight Show with Jay Leno (1992)
- MTV Movie & TV Awards (1992) as Self - Presenter
- Picket Fences (1992) as Peggy Patterson
- Rugrats (1991) as Cynthia P.I. (voice)
- The Torkelsons (1991) as Samantha
- The Simpsons (1989) as Melody Juniper (voice)
- Free Spirit (1989) as Jessie Harper
- Roseanne (1988)
- My Stepmother Is an Alien (1988) as Jessie Mills
- Impure Thoughts (1986) as Patty Stubbs
- Entertainment Tonight (1981) as Self
- How I Met The Robin as Lily Aldrin
- Dodie & Cheryl Get Hitched as Cheryl Crum
- American Pie: Beneath the Crust Vol. 2 as Self