Rachael MacFarlane, American voice actress and singer
Rachael Ann Laudiero (née MacFarlane; born March 21, 1976) is an American voice actress and singer. Her voice credits include Hayley Smith on the animated television show American Dad!, Supreme Leader Numbuh 362 in the television series Codename: Kids Next Door, and Kate Lockwell in the video game Starcraft II. She is the younger sister of Seth MacFarlane.

In addition to voice acting, MacFarlane has also been involved in other aspects of animation, such as being a production manager for The Grim Adventures of Billy & Mandy and Welcome to Eltingville and she wrote an episode of The Grim Adventures of Billy & Mandy, titled "Educating Grim".