Joan Holloway is a fictional character from the television series Mad Men, which aired from 2007 to 2015. She is portrayed by actress Christina Hendricks and serves as the office manager at the advertising agency Sterling Cooper. Joan is known for her striking appearance, intelligence, and strong personality, often navigating the challenges of a male-dominated workplace in the 1960s. Throughout the series, Joan's character evolves as she seeks to assert her independence and pursue her career ambitions. She is also depicted as a loyal friend and a complex individual, balancing her professional life with personal relationships, including her interactions with other main characters like Don Draper and Peggy Olson.