盾状火山(英语：shield volcano)是一类火山，具有宽广缓和的斜坡，底部较大，整体看来就像是一个盾牌。此种火山通常由玄武岩岩浆构成，流动性高，黏滞性较低，故能够分布在很大的区域，才能形成宽广的山形。盾状火山锥是由一层层的岩流，流到火山周围而形成。这多发生于海洋中，最著名的例子是夏威夷群岛，这个群岛的每个岛屿都是一座巨大的盾状火山。在美国加州北部和俄勒冈，许多盾状火山有三或四英哩宽的直径和高达1500到2000英尺。

此型火山在太阳系其他行星和卫星也可发现，火星上的奥林帕斯山是太阳系中已知最高的山。

A shield volcano is a type of volcano usually built almost entirely of fluid magma flows. They are named for their large size and low profile, resembling a warrior's shield lying on the ground. This is caused by the highly fluid lava they erupt, which travels farther than lava erupted from stratovolcanoes. This results in the steady accumulation of broad sheets of lava, building up the shield volcano's distinctive form. The shape of shield volcanoes is due to the low-viscosity magma of their mafic lava.