The 1884 United States presidential election was the 25th quadrennial presidential election, held on Tuesday, November 4, 1884. In the election, Governor Grover Cleveland of New York defeated Republican James G. Blaine of Maine. It was set apart by unpleasant mudslinging and shameful personal allegations that eclipsed substantive issues, such as civil administration change. Cleveland was the first Democrat elected president of the United States since James Buchanan in 1856, the first to hold office since Andrew Johnson left the White House in 1869, and the last to hold office until Woodrow Wilson, who began his first term in 1913. For this reason, 1884 is a significant election in U.S. political history, marking an interruption in the era when Republicans largely controlled the presidency between Reconstruction and the Great Depression.

The 1884 Republican National Convention was a presidential nominating convention held at the Exposition Hall in Chicago, on June 3–6, 1884. It resulted in the nomination of former House Speaker James G. Blaine from Maine for president and Senator John A. Logan of Illinois for vice president. The ticket lost in the election of 1884 to Democrats Grover Cleveland and Thomas A. Hendricks.