Spirit Halloween, LLC is an American seasonal retailer that supplies Halloween decorations, costumes, props and accessories. It is the country's largest Halloween retailer. It is currently owned by Spencer Gifts. It was founded in 1983 and began in the Castro Valley Mall in San Francisco, California, and has headquarters in Egg Harbor Township, New Jersey. In 1999, the store had 60 seasonal locations. Today, the pop-up retailer opens over a thousand locations across the United States and Canada each October.