1936 United States presidential election in Illinois

1936 United States presidential election in Illinois
	November 3, 1936
All 29 Illinois votes to the Electoral College
Roosevelt 40–50% 50–60% 60–70%	Landon 40–50% 50–60% 60–70%
President before election; Franklin D. Roosevelt; Democratic	Elected President ; Franklin D. Roosevelt; Democratic

The 1936 United States presidential election in Illinois took place on November 3, 1936, as part of the 1936 United States presidential election. State voters chose 29 representatives, or electors, to the Electoral College, who voted for president and vice president.

Illinois was won by incumbent President Franklin D. Roosevelt (D–New York), running with Vice President John Nance Garner, with 57.70% of the popular vote, against Governor Alf Landon (R–Kansas), running with Frank Knox, with 39.69% of the popular vote. In this election, Cook County became the first county in American history to give over a million votes to a presidential candidate. As of the 2024 presidential election, this is the last occasion when Iroquois County and Woodford County voted for a Democratic presidential candidate.