Alyson Hannigan (gebore 24 Maart 1974) is 'n Amerikaanse aktrise en vervaardiger. Sy is bekend vir haar rolle in die rolprente American Pie (1999) en American Reunion (2012), en in die televisiereekse Buffy the Vampire Slayer (1996) en How I Met Your Mother (2005).
- 1988: My Stepmother Is an Alien
- 1999: American Pie
- 2001: Beyond the City Limits
- 2001: American Pie 2
- 2003: American Wedding
- 2006: Date Movie
- 2006: Farce of the Penguins
- 2012: American Reunion
- 2018: You Might Be the Killer
- 2019: Kim Possible
- Dodie & Cheryl Get Hitched
- 1989: Free Spirit
- 1993: Almost Home
- 1996: Buffy the Vampire Slayer
- 2001: Celebrity Adventures
- 2003: Talking to Animals
- 2003: Pepsi Smash
- 2005: How I Met Your Mother
- 2009: Gordon Ramsay: Cookalong Live
- 2009: Tit for Tat
- 2011: Penn & Teller: Fool Us
- 2016: Star Plates
- 2018: Fancy Nancy
- 1996: Friends for Life
- 2004: Americana
- 2004: Buffy the Vampire Slayer: The Animated Series
- 2009: CBS Fall Preview
- 2014: More Time with Family
- 2016: The First Wives Club
- 2018: Man of the House
- 2002: Good Times with Cast and Crew of 'American Pie 2'
- 2004: 'Buffy': Season 6 Overview
- 2004: 'Buffy': Season 7 Overview