The 1872 Democratic National Convention was a presidential nominating convention held at Ford's Grand Opera House on East Fayette Street, between North Howard and North Eutaw Streets, in Baltimore, Maryland on July 9 and 10, 1872. It resulted in the nomination of newspaper publisher Horace Greeley of New York and Governor Benjamin Gratz Brown of Missouri for president and vice president, a ticket previously nominated by the rump Liberal Republican faction convention meeting, also held in Baltimore's newly built premier Opera House of nationally well-known theatre owner/operator John T. Ford of the major Republican Party, which had already re-nominated incumbent President Ulysses S. Grant of the regular Republicans for another term.

Benjamin Gratz Brown was an American politician. He was a U.S. Senator, the 20th Governor of Missouri, and the Liberal Republican and Democratic Party vice presidential candidate in the presidential election of 1872.