Haylie Katherine Duff (born February 19, 1985) is an American actress and singer-songwriter. She is the older sister of actress and singer-songwriter Hilary Duff. She was known on her role as Sandy Jameson in the series 7th Heaven, and Annie Nelson in the made for television movie Love Takes Wing and its sequel Love Finds a Home.

She made a guest appearance as Stewie Griffin's babysitter on the album Family Guy: Live in Vegas. She sang in the song "Babysitting is a Bum Deal", which was expressing her complaints about babysitting him.