| Election Name: | 2021 Cedar Rapids, mayoral election |
| Country: | Iowa |
| Flag Image: | File:Flag of Cedar Rapids, Iowa.svg |
| Ongoing: | no |
| Previous Year: | 2017 |
| Election Date: | November 2, 2021 November 30, 2021 (runoff) |
| Next Election: | 2025 |
| Next Year: | 2025 |
| 1Blank: | First-round |
| 2Blank: | Runoff |
| Candidate1: | Tiffany O'Donnell |
| Party1: | Republican Party (United States) |
| 1Data1: | 10,991 42.2% |
| 2Data1: | 13,479 67.9% |
| Candidate2: | Amara Andrews |
| Party2: | Democratic Party (United States) |
| 1Data2: | 7,332 28.2% |
| 2Data2: | 6,358 32.1% |
| Candidate3: | Brad Hart |
| Party3: | Nonpartisan politician |
| Alliance3: | Republican Party (United States) |
| 1Data3: | 7,308 28.1% |
| 2Data3: | Eliminated |
The 2021 Cedar Rapids mayoral election was held of November 2, 2021, with a subsequent runoff election held on November 30, 2021. The first round of the election futured three major candidates. Candidate Tiffany O'Donnell strongly led the first round, with candidate Amara Andrews finishing in second place. Incumbent mayor Brad Hart failed to advance to the runoff, narrowly finishing behind Andrews. In the runoff election, O'Donnell handily won the election, winning more than twice as many votes as Andrews.
Although Cedar Rapids municipal elections are officially nonpartisan on the ballot, candidates could still state their political affiliation on filings or self-identify with a party.