Mid Suffolk District Council elections are held every four years to elect members of Mid Suffolk District Council in Suffolk, England. Since the last boundary changes in 2019, there have been 34 councillors elected from 26 wards.
A by-election occurs when seats become vacant between council elections. Below is a summary of by-elections from 1983 onwards. Full by-election results are listed under the last regular election preceeding the by-election and can be found by clicking on the ward name.