Robert Emmet "Bob" McGrath (born June 13, 1932) is an American singer and actor best known for playing the human character Bob Johnson on Sesame Street. He was born in Ottawa, Illinois. McGrath was named for Irish patriot Robert Emmet.
Along with Susan, played by Loretta Long, Bob has been one of the two longest-lasting human characters on the series. A Noggin segment proclaimed the four decades of Bob when promoting Sesame Street on that network.
McGrath has said that his two favorite moments on Sesame Street were Christmas Eve on Sesame Street (a 1978 Christmas special that included a pastiche of "The Gift of the Magi"), and the 1983 sequence that candidly addressed the death of longtime character Mr. Hooper, played by his good friend Will Lee who had died the previous year.