| Election Name: | Iowa State Senate elections, 2016 |
| Country: | Iowa |
| Flag Image: | Flag of Iowa (variant).svg |
| Type: | legislative |
| Ongoing: | no |
| Previous Election: | 2014 Iowa Senate election |
| Previous Year: | 2014 |
| Next Election: | 2018 Iowa Senate election |
| Next Year: | 2018 |
| Seats For Election: | 25 out of 50 seats in the Iowa State Senate |
| Majority Seats: | 26 |
| Election Date: | November 8, 2016 |
| Leader1: | Bill Dix |
| Party1: | Republican Party (United States) |
| Leaders Seat1: | 25th district |
| Last Election1: | 24 |
| Seats Before1: | 23[1] |
| Seat Change1: | 6 |
| Seats After1: | 29 |
| Leader2: | Pam Jochum |
| Party2: | Democratic Party (United States) |
| Leaders Seat2: | 50th district |
| Last Election2: | 26 |
| Seats Before2: | 26 |
| Seat Change2: | 6 |
| Seats After2: | 20 |
| Leader3: | David Johnson |
| Party3: | Independent (politician) |
| Leaders Seat3: | 1st district |
| Last Election3: | 0[2] |
| Seats Before3: | 1 |
| Seats After3: | 1 |
| President of the Senate | |
| Before Party: | Democratic |
| After Election: | Jack Whitver |
| After Party: | Republican |
| Map Size: | 400px |
The 2016 Iowa Senate election was held on November 8, 2016. The Senate seats for the twenty-five even-numbered districts were up for election. Senate terms are staggered such that half the membership is elected every two years, with each Senators serving a four-year term. Prior to the election, the Democrats were in the majority.
| Affiliation | Candidates | Votes | Vote % | Seats Won | Seats After | ||
|---|---|---|---|---|---|---|---|
| Republican | 24 | 424,175 | 58.84% | 19 (6) | 29 | ||
| Democratic | 20 | 274,439 | 38.07% | 6 (6) | 20 | ||
| Libertarian | 6 | 15,512 | 2.15% | 0 | |||
| Independent | 1 | 6,755 | 0.94% | 0 | 1 | ||
| Total | 51 | 720,881 | 100% | 25 | 50 | ||
The election took place on November 8, 2016. Candidate list[3] and results [4] from the Iowa Secretary of State.