January Kristen Jones (born January 5, 1978) is an American actress and model who played Betty Draper in Mad Men (2007-2015), for which she was nominated for two Golden Globe Awards for Best Actress - Television Series Drama and a Primetime Emmy Award for Outstanding Lead Actress in a Drama Series. She also portrayed Melissa Chartres 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).