The new series, which makes the first full appearance of Peter Capaldi as the Doctor, starts on 23 August 23rd.
Other guest stars confirmed for the series include Frank Skinner, Ben Miller, Tom Riley, Keeley Hawes and Hermione Norris.
Speaking about the role, Michelle Gomez said: “Well of course Peter Capaldi is our next Doctor, which makes complete sense. I’m thrilled to join him. Well, you would be wouldn’t you?”
Lead writer and executive producer, Steven Moffat, added: “I’ve known Michelle for years, and I’m thrilled to welcome her to Doctor Who. She’s everything we need – brilliant, Scottish, and a tiny bit satanic.”