Full Name: January Kristen Jones
Born: January 5, 1978
Birthplace: Sioux Falls, South Dakota, U.S.
Occupation: Actress, model
Years active: 1999–Present
Children: 1

January Kristen Jones, born January 5, 1978, is an American actress and model. January is best known for portraying Betty Draper in the AMC television series Mad Men. She is also known for her roles in films such as Unknown, Seeking Justice, and X-Men: First Class. Since 2015, January has been starring in the FOX series The Last Man on Earth, as Melissa Chartres.

January was born in South Dakota, the daughter of Karen Sue and Marvin Jones.

January has had supporting roles in various films including; Anger Management, Love Actually, and Dirty Dancing: Havana Nights. In 2005, she appeared in the film, The Three Burials of Melquiades Estrada.

From 2007 to 2015, January portrayed Betty Draper in the AMC television series Mad Men. She has received two Golden Globe nominations and one Emmy nomination for her performance as Betty.

In November 2009, January hosted an episode of Saturday Night live.

In 2011, January starred in Unknown, alongside Liam Neeson and Diane Kruger. She also starred in Seeking Justice alongside Nicolas Cage and Guy Pearce. January portrayed Emma Frost in X-Men: First Class.

January currently portrays Melissa Chartres in the FOX series The Last Man on Earth.

In 2009, January announced in Vanity Fair magazine that she had joined Oceana as a celebrity spokesperson, to save endangered sharks.