January Kristen Jones (born January 5, 1978 in Sioux Falls, South Dakota) is an American actor and model. Following a bevy of supporting roles in films like Taboo and Love Actually, her breakout role was as troubled 1950s housewife Betty Draper in Mad Men. Since then she's played Emma Frost in X-Men: First Class and Melissa Chartres on The Last Man on Earth, among others.
- Anger Management (2003): Gina
- American Wedding (2003): Cadence Flaherty
- Love Actually (2003): Jeannie
- Dirty Dancing: Havana Nights (2004): Eve
- We Are Marshall (2006): Carole Dawson
- Mad Men (2007-2015): Betty Draper
- Unknown (2011): Elizabeth Harris
- X-Men: First Class (2011): Emma Frost
- Seeking Justice (2011): Laura Gerard
- Sweetwater (2013): Sarah Ramirez
- Good Kill (2014): Molly Egan
- The Last Man on Earth (2015-2018): Melissa Chartres
- The Politician (2019): Lizbeth Sloan
- Spinning Out (2020): Carol Baker
- Almost Famous Name: She shares her name with an American singer from the 1960's.