| American Wedding | 2003 | Michelle Flaherty | |
| Buffy the Vampire Slayer | 2002 | Willow Rosenberg | |
| Beyond the City Limits | 2001 | Lexi | |
| American Pie 2 | 2001 | Michelle Flaherty | |
| Boys and Girls | 2000 | Betty | |
| Hayley Wagner, Star | 1999 | Jenna Jakes | |
| American Pie | 1999 | Michelle Flaherty | |
| Dead Man on Campus | 1998 | Lucy | |
| "Buffy the Vampire Slayer" | 1997 | Willow Rosenberg | |
| For My Daughter's Honor | 1996 | Kelly | |
| A Case for Life | 1996 | Iris | |
| The Stranger Beside Me | 1995 | Dana | |
| Switched at Birth | 1991 | Gina Twigg, Age 13-16 | |
| "Free Spirit" | 1989 | Jessie Harper | |
| My Stepmother Is an Alien | 1988 | Jessie Mills | |
Birth name: Allison Lee Hannigan
Gender: Female
Spouse: Allycat
Profession: Actress
Nickname: Allycat
Height: 5' 6