The 68th United States Congress was a meeting of the legislative branch of the United States federal government, consisting of the United States Senate and the United States House of Representatives. It met in Washington, D.C., from March 4, 1923, to March 4, 1925, during the last months of Warren G. Harding's presidency, and the first years of the administration of his successor, Calvin Coolidge. The apportionment of seats in the House of Representatives was based on the 1910 United States census.

Warren G. Harding's tenure as the 29th president of the United States lasted from March 4, 1921, until his death on August 2, 1923. Harding presided over the country in the aftermath of World War I. A Republican from Ohio, Harding held office during a period in American political history from the mid-1890s to 1932 that was generally dominated by his party. He died of an apparent heart attack and was succeeded by Vice President Calvin Coolidge.