Alison Elizabeth Pill (born November 27, 1985) is a Canadian film, television and theatre actress.
She was born in Toronto, Ontario, Canada and attended Vaughan Road Academy.
In 2006, Pill starred as Grace Webster in the short-lived NBC drama The Book of Daniel, and was nominated for a Tony Award for her performance in Martin McDonagh's The Lieutenant of Inishmore. Pill had a major supporting role as campaign manager Anne Kronenberg in the Oscar-winning 2008 film Milk. She recently starred as April, a college student who discovers she has cancer, in the HBO series, In Treatment. She is currently playing Annie Sullivan on Broadway in The Miracle Worker as of February 2010.