January Kristen Jones (born January 5, 1978) is an American actress and model. She is best known for playing Betty Draper in Mad Men (2007–2015), for which she was nominated for two Golden Globe Awards and a Primetime Emmy Award. She has also appeared in The Last Man on Earth (2015–2018) and has starred in films such as American Wedding (2003), We Are Marshall (2006), The Boat That Rocked (2009), Unknown (2011), Seeking Justice (2011), and X-Men: First Class (2011).