The 1908 Iowa Senate elections took place as part of the biennial 1908 United States elections.

A statewide map of the 50 state Senate districts in the 1908 elections is provided by the Iowa General Assembly here.

[1] The primary election on June 2, 1908, determined which candidates would appear on the general election ballot on November 3, 1908.

To claim control of the chamber from Republicans, the Democrats needed to net 12 Senate seats.

Republicans maintained control of the Iowa State Senate following the 1908 general election with the balance of power shifting to Republicans holding 34 seats and Democrats having 16 seats (a net gain of 2 seats for Democrats).