Theodore Evelyn Mosby is a fictional character and the protagonist in the American sitcom How I Met Your Mother, portrayed by Josh Radnor. He serves as the show's narrator from the future, voiced by Bob Saget, as he tells his children the "long version" of how he met their mother.

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.