A general election was scheduled in the U.S. state of Idaho on November 8, 2016. Along with the presidential election, one United States Senate seat and Idaho's two seats in the United States House of Representatives were up for election, as were all the seats in both chambers of the Idaho Legislature. Primary elections were held on May 17, 2016.

Republican candidate Donald Trump won in Idaho with 59% of the popular vote and gained four electoral votes from the state.

One of the two United States Senators representing Idaho was up for election. Incumbent Republican Mike Crapo was re-elected to a fourth term with 66% of the votes.

Idaho has two representatives in the United States House of Representatives. Incumbent Republicans Raúl Labrador and Mike Simpson were both up for election, and they won their respective races comfortably.

Jim Jones, the chief justice of Idaho Supreme Court, decided not to run for re-election in 2016. A four-way Nonpartisan primary election for his seat was held on May 17. No candidate managed to win 50% of the votes and the top two finishers advanced to a run-off held on November 8, the first in the state since 1998. Rupert attorney Robyn Brody defeated state senator Curt McKenzie in the runoff with 54% of the votes.

All 35 seats of the Idaho Senate were up for election. Republicans managed to flip one district.

All 70 seats of the Idaho House of Representatives were up for election. Republicans flipped three districts.

One statewide ballot measure appeared on the ballot.