1905 Chicago mayoral election

In the Chicago mayoral election of 1905, Democratic nominee Edward Fitzsimmons Dunne defeated Republican nominee John Maynard Harlan and Socialist nominee John Collins.

This was the final regularly-scheduled Chicago mayoral election for a two-year term. Subsequent elections have been for four-year terms.

The general election took place on April 4.

Ahead of the election, both major parties selected their nominees at nominating conventions in February. Incumbent Democrat Carter Harrison IV did not seek renomination. Edward F. Dunne, with the backing of a number of political forces, and without opposition from any major player in his party, easily secured support for the Democratic Party nomination and was delivered by acclamation at the party's convention. The Republican Party nominated Harlan at their own convention. In addition, Socialists nominated John Collins at their convention.