John Donald Fiedler (February 3, 1925 – June 25, 2005) was an American voice actor and character actor in stage, film, television and radio. Slight, balding, and bespectacled, with a piping voice (reminiscent of actor Percy Helton), his career stretched forty years but he is perhaps best remembered for two roles: the voice of Piglet in Disney's many Winnie the Pooh productions and the role of Mr. Peterson, nervous patient on The Bob Newhart Show.

Typical of busy character actors, John Fielder has made his face--and voice--recognizable to millions. Many would know the bald-pated Fiedler as therapy patient Mr. Peterson on TV's "Bob Newhart Show, The" (1972); others might first recognize him for the 1968 movie and spin-off TV series "Odd Couple, The" (1970) (or perhaps even from the Broadway play that preceded them). Even kids would know that helium-high voice from animated Disney features like Robin Hood (1973), Fox and the Hound, The (1981) and the "Winnie the Pooh" stories in which he voices Piglet. The son of an Irish-German beer salesman, Fiedler knew he wanted to be an actor from the childhood days when he had a full head of reddish-yellow hair. He made his first professional appearances on stage, branched out into live TV in New York and, then, during the 20 years he lived in Hollywood (1960-80), turned up in many films and an ever greater number of popular TV series.