Tracy Mosby is the title character from the CBS television sitcom How I Met Your Mother. The show, narrated by Future Ted, tells the story of how Ted Mosby met his children's mother. Tracy McConnell appears in eight episodes, from "Lucky Penny" to "The Time Travelers", as an unseen character; she was first seen fully in season 8 finale "Something New" and was promoted to a main character in season 9. She is played by Cristin Milioti.

How I Met Your Mother is an American sitcom, created by Craig Thomas and Carter Bays for CBS. The series, which aired from September 19, 2005, to March 31, 2014, follows the main character, Ted Mosby, and his group of friends in New York City's Manhattan. As a framing device, Ted, in 2030, recounts to his son, Luke, and daughter, Penny, the events from September 2005 to May 2013 that led him to meet their mother. How I Met Your Mother was a joint production by Bays & Thomas Productions and 20th Century Fox Television, and syndicated by 20th Television.