The Alan John Factory is a historic structure located at 568 6th Avenue in San Diego's Gaslamp Quarter, in the U.S. state of California. It was built in 1908.

The plaque says, "This four-story building is made of concrete with a pressed brick front, and a loft-like gallery on the first floor. In 1910, George Hazard and Elwyn Gould opened a hardware store here and later used it as a warehouse. Later, Krasne's Leather Goods and Guns operated on the ground floor, and the upper floors contained the Alan John Clothing Factory."

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  Plaque for the building, 2016

• List of Gaslamp Quarter historic buildings

• Media related to Alan John Factory at Wikimedia Commons
• The Alan John Factory - San Diego, CA - Signs of History