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. Among his other credits, he wrote and produced The Switch (2010). He also co-wrote Wall Street: Money Never Sleeps (2010), and wrote The Dilemma (2011), and Just Go with It (2011). He performed a rewrite for the musical Rock of Ages (2012), and the mixed martial arts comedy Here Comes the Boom (2012). Loeb was a compulsive gambler from the age of ten until he joined Gamblers Anonymous in 2005, claiming: "Literally the minute I quit gambling my writing changed. It was magical. I had been giving so much emotional energy to gambling that only half of myself was out there writing. Gambling was a time suck, an energy suck, a creativity suck. I started going to GA meetings every Thursday night, and the writing flourished. It had so much more energy and passion." He lost up to $30,000 to his gambling addiction in a single weekend and he was eventually left with $150,000 in credit-card debt. Loeb is a keen follower of rock band Grateful Dead, which he compares to the film industry in its fanbase. Three years after resurrecting his screenwriting career with The Only Living Boy in New York, Loeb had landed enough script deals to go from broke-to-buying a home in the Hollywood Hills. In 2008 he paid $2.03 million for the home, which he later invested an additional $500,000 for upgrades and renovations. By 2014, Allan Loeb had relocated to Venice Beach, for a "quieter" pace. It wasn't disclosed how much he paid for his Venice Beach home, but he listed his Hills home for $1.99 million. As of 2016, Allan Loeb divides his time between his apartment in Manhattan, New York and his beach house in Venice, California.

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