多数决民主（Majoritarian democracy），指依循多数统治的民主模式。典型为「西敏模式」（Westminster Model）。

荷兰学者李帕特（Arend Lijphart）认为，多数决民主具有以下特征：

Majoritarian democracy refers to democracy based upon majority rule of a society's citizens. Majoritarian democracy is the conventional form of democracy used as a political system in many countries.

Though common, majoritarian democracy is not universally accepted – majoritarian democracy was famously criticized as having the inherent danger of becoming a "tyranny of the majority" whereby the majority in society could oppress or exclude minority groups. In contrast to majoritarian democracy and the perceived danger of a tyranny of the majority, consensus democracy was developed in response that emphasizes rule by as many people as possible to make government inclusive, with a majority of support from society merely being a minimal threshold. Fascism rejects majoritarian democracy because the latter assumes equality of citizens and fascists claim that fascism is a form of authoritarian democracy that represents the views of a dynamic organized minority of a nation rather than the disorganized majority.