| Election Name: | 2018 Connecticut State Treasurer election |
| Type: | presidential |
| Ongoing: | no |
| Election Date: | November 6, 2018 |
| Country: | Connecticut |
| Previous Election: | 2014 Connecticut State Treasurer election |
| Previous Year: | 2014 |
| Next Election: | 2022 Connecticut State Treasurer election |
| Next Year: | 2022 |
| Image1: | 3x4.svg |
| Nominee1: | Shawn Wooden |
| Party1: | Connecticut Democratic Party |
| Alliance1: | Connecticut Working Families Party |
| Popular Vote1: | 748,091 |
| Percentage1: | 55.1% |
| Nominee2: | Thad Gray |
| Party2: | Connecticut Republican Party |
| Alliance2: | Independent Party of Connecticut |
| Popular Vote2: | 592,811 |
| Percentage2: | 43.7% |
| State Treasurer | |
| Before Election: | Denise Nappier |
| Before Party: | Connecticut Democratic Party |
| After Election: | Shawn Wooden |
| After Party: | Connecticut Democratic Party |
The 2018 Connecticut State Treasurer election took place on November 6, 2018, to elect the next Connecticut State Treasurer. Five-term incumbent Democratic Party Treasurer Denise Nappier did not seek re-election. Democratic nominee Shawn Wooden defeated Republican nominee Thad Gray with 55.1% of the vote.
Wooden won all 5 congressional districts.[4]
| District | Wooden | Gray | Representative | ||
|---|---|---|---|---|---|
| 60% | 39% | John B. Larson | |||
| 52% | 47% | Joe Courtney | |||
| 57% | 41% | Rosa DeLauro | |||
| 56% | 43% | Jim Himes | |||
| 51% | 48% | Elizabeth Esty (115th Congress) | |||
| Jahana Hayes (116th Congress) | |||||