Josh Radnor is an American actor who is best-known for playing Ted Mosby on the CBS sitcom How I Met Your Mother.

In 2001 Radnor was originally cast as the lead in The WB series Off Centre, but the role eventually went to Eddie Kaye Thomas. In 2002 he made his Broadway debut in the stage version of The Graduate, succeeding Jason Biggs, opposite Kathleen Turner and Alicia Silverstone In July 2008, he starred opposite Jennifer Westfeldt in the premiere of the play, Finks, written by Joe Gilford and directed by Charlie Stratton for New York Stage and Film.

Radnor was born in Bexley, Ohio, the son of Alan Radnor, a lawyer. He grew up in Bexley, a suburb of Columbus, where he attended Jewish day schools (including the Columbus Torah Academy) and summer camps. He graduated from Bexley High School and attended Kenyon College, where his school's theater department presented him with the Paul NewmanAward, named for the school's most famous alumnus. Radnor received his master of fine arts degree in acting from NYU's Tisch School of the Arts.

He lives in Los Angeles' Hollywood Dell neighborhood and is dating actress Lindsay Pricewho starred in the canceled television show, Lipstick Jungle.