Allan Loeb (born July 25, 1969) is an American screenwriter and film and television producer. He wrote the 2007 film Things We Lost in the Fire and created the 2008 television series New Amsterdam. He wrote the film drama 21, which also was released in 2008. He wrote and produced The Switch which came out in August 2010. He wrote Wall Street: Money Never Sleeps, released in September 2010, The Dilemma (January 2011), and Just Go with It (February 2011).