The Knickerbocker Theatre was a movie theater located at 18th Street and Columbia Road in the Adams Morgan neighborhood of Washington, D.C. in the United States. The theater's roof collapsed on January 28, 1922, under the weight of snow from a two-day blizzard that was later dubbed the Knickerbocker Storm. The theater was showing Get-Rich-Quick Wallingford at the time of the collapse, which killed 98 patrons and injured 133.