What was the main United States stock exchange called when the 1929 Wall Street Crash occurred?

The main United States stock exchange involved in the 1929 Wall Street Crash was the New York Stock Exchange.

The NYSE, located on Wall Street in New York City, was the central marketplace for many of the securities traded during the boom and collapse. On October 24, 1929, panic selling produced Black Thursday. After a temporary effort by bankers to support prices, selling intensified again, especially on October 28 and October 29.

The crash’s consequences extended far beyond the exchange itself. Falling share prices damaged investors, banks, businesses, and households, while the broader economic contraction became the Great Depression. The NYSE was not the only exchange in the country, and the crash was not caused by a single trading day alone. It developed through a series of selling waves and interacted with broader weaknesses in credit, production, and employment.