Barry Marder is an American stand-up comedian and writer. He is identified with the character of Ted L. Nancy, author of the Letters from a Nut series of books.
Marder has performed at most major theaters in the United States as opening act for Jerry Seinfeld.
"Ted L. Nancy"
Under the pseudonym "Ted L. Nancy," Marder wrote a series of books of prank letters, together with their responses. Books in the series include: Letters from a Nut, More Letters from a Nut, Extra Nutty! Even More Letters from a Nut, Hello Junk Mail!, Ted L. Nancy’s Afternoon Stories, and All New Letters from a Nut. Comedian Bruce Baum is the co-author of the first three books.
In 2002 ABC developed a pilot for a television series based on Letters From A Nut. It was written and produced by Barry Marder and Jerry Seinfeld. In 2003 FX Television made a pilot for "The Ted L. Nancy Show." That show was written and produced by Marder and Seinfeld. Again in 2007, Lionsgate Television optioned the books from Marder to make into a television show, as reported by Daily Variety. The following year, Lionsgate sold the show as a pilot presentation to Fox TV. That show called Sincerely, Ted L. Nancy is created and written by Seinfeld, Marder and Chuck Martin. In the pilot, Ted L. Nancy (Kevin Sussman) is the voice for the underdog consumer who is usually the last to get help from customer service.
In 2013 Scholastic published an historical Ted L. Nancy book entitled Letters From A Nut's Family Tree.
In April 2016 the first two episodes of Ted L. Nancy’s SCAMMERS appeared on Hulu. The shorts were produced with Robert Redford’s Sundance Productions. In these, Ted L. Nancy answers unscrupulous people who promise him great wealth through emails. 
- "Bee Movie". Retrieved September 6, 2012.
- "Comedians in Cars Getting Coffee". Retrieved September 6, 2012.
- "Comedians in Cars Getting Coffee". Retrieved June 13, 2016.
- "Shooting Stars: ABC pilot attempts to answer nutty questions". Retrieved 5 September 2012.
- "Nancy, Lionsgate plot 'Nut' job for TV". Variety. Retrieved 5 September 2012.
- "What Publishing Editors Recently Bought". Retrieved 5 September 2012.
- "Hulu Scammers". Retrieved 13 June 2016.