Gemencheh is a state constituency in Negeri Sembilan, Malaysia, that has been represented in the Negeri Sembilan State Legislative Assembly.
The state constituency was first contested in 1974 and is mandated to return a single Assemblyman to the Negeri Sembilan State Legislative Assembly under the first-past-the-post voting system.
According to the gazette issued on 24 March 2018, the Gemencheh constituency has a total of 15 polling districts.
The electoral results for the Gemencheh state constituency in 2008, 2013 and 2018 are as follows.