Mercari, Inc. (TYO: 4385) is a Japanese e-commerce company founded in 2013, with offices in the United States. Their main product, the Mercari marketplace app, was first launched in Japan in July 2013, and has since grown to become Japan's largest community-powered marketplace with over JPY 10 billion in transactions carried out on the platform each month. Among those Japanese users utilizing one of the country's many community marketplace apps, 94% were found to be using Mercari.