Joshua Thomas Radnor is an American actor, filmmaker, author, and musician. He is best known for portraying Ted Mosby on the Emmy Award–winning CBS sitcom How I Met Your Mother (2005–2014). He made his writing and directorial debut with the 2010 comedy drama film Happythankyoumoreplease, for which he won the Sundance Film Festival Audience Award and was nominated for the Grand Jury Prize.

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.