Two special elections for the Michigan Senate were held in the U.S. state of Michigan on November 2, 2021, in addition to various other local elections and ballot measures.

Incumbent Republican Peter Lucido resigned on December 31, 2020, to become prosecutor of Macomb County, Michigan after winning election in 2020.

[1] Douglas C. Wozniak, a state representative, won the Republican primary, while Martin Robert Genter, a United Nations Foundation volunteer and political consultant,[2] won the Democratic primary.

[3] Incumbent Republican Peter MacGregor resigned on December 31, 2020, to become treasurer of Kent County, Michigan after winning election in 2020.

[4] Mark Huizenga, a state representative, won the Republican primary, while Keith Courtade, a former county commissioner,[5] won the Democratic primary.