| Election Name: | 1821 Maine gubernatorial election |
| Country: | Maine |
| Type: | presidential |
| Ongoing: | no |
| Previous Election: | 1820 Maine gubernatorial election |
| Previous Year: | 1820 |
| Next Election: | 1822 Maine gubernatorial election |
| Next Year: | 1822 |
| Election Date: | September 10, 1821 |
| Nominee1: | Albion Parris |
| Party1: | Democratic-Republican Party |
| Popular Vote1: | 12,887 |
| Percentage1: | 52.84% |
| Nominee2: | Ezekiel Whitman |
| Party2: | Federalist Party |
| Popular Vote2: | 6,811 |
| Percentage2: | 27.93% |
| Nominee3: | Joshua Wingate, Jr. |
| Party3: | Democratic-Republican Party |
| Popular Vote3: | 3,879 |
| Percentage3: | 15.91% |
| Governor | |
| Before Election: | William D. Williamson (acting) |
| Before Party: | Democratic Party (United States) |
| After Election: | Albion Parris |
| After Party: | Democratic Party (United States) |
The 1821 Maine gubernatorial election took place on September 10, 1821.
Incumbent acting Democratic-Republican Governor William D. Williamson became Governor in May 1821 when Governor William King resigned. Williamson did not stand for re-election but successfully stood for election to the U.S. House of Representatives.
Democratic-Republican candidate Albion Parris defeated Federalist candidate Ezekiel Whitman and Democratic-Republican Joshua Wingate, Jr.
Williamson would resign as Governor in December 1821 and be followed in office as acting Governor by Benjamin Ames and Daniel Rose before Parris took office in January 1822.