Rachael Ann MacFarlane (born March 21, 1976) is an American voice actress and singer best known as the voice of character Hayley Smith on the animated television show American Dad!, which was created by her brother Seth MacFarlane.

For Disney, she voiced Cordelia in the Sofia the First episode "Gone with the Wand" and Azurine in The Mystic Isles. She also voiced Enid Quintara and Luella Spear in Fillmore!