The World's Largest Disco is an annual event held at the Buffalo Convention Center in Buffalo, New York each year the Saturday after Thanksgiving. The event, widely popular in the area, is a tribute to the disco era and features live performances by 1970s-era musicians, along with dancers dressed in 1970s attire.
The current event began as an annual occurrence in 1994, but it traces its history and name to a disco held in Buffalo in 1979, featuring The Trammps and Gloria Gaynor. That disco is marked in Guinness World Records as the largest disco in the history, with 13,000 people in attendance. The current incarnation of the event draws 7,000, though this is only because of capacity issues. Tickets for the event regularly sell out within minutes of being put on sale, which usually occurs in early August.