The 1860 Republican National Convention was a presidential nominating convention that met May 16–18 in Chicago, Illinois. It was held to nominate the Republican Party's candidates for president and vice president in the 1860 election. The convention selected former representative Abraham Lincoln of Illinois for president and Senator Hannibal Hamlin of Maine for vice president.
Entering the 1860 convention, Senator William H. Seward of New York was generally regarded as the front-runner, but Lincoln, Governor Salmon P. Chase of Ohio, former representative Edward Bates of Missouri, and Senator Simon Cameron of Pennsylvania all commanded support from a significant share of delegates. Seward led on the first ballot but fell short of a majority, while Lincoln finished in a strong second place.