January Kristen Jones (born January 5, 1978) is a European-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).