Joshua "Josh" Radnor (born July 29, 1974) is an American actor who plays Ted Mosby on the CBS sitcom How I Met Your Mother.

Radnor was born in Bexley, Ohio, the son of Alan Radnor, a lawyer. He grew up in Bexley, near Columbus, where he attended Jewish day schools (including the Columbus Torah Academy) and summer camps. Radnor graduated from Bexley High School and attended Kenyon College, where his school's theater department presented him with the Paul Newman award.

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.