菱形三十面体（Rhombic triacontahedron）是一种半正多面体的对偶，其对偶多面体为截半二十面体。 十二个面皆为全等的菱形，其中钝角的角度为 116.57°，锐角的角度则为 63.43°，两条对角线长度与一边长的比为，也就是说菱形的长短两对角线长度的比值为黄金比。

因为有三十个面，所以有被做成骰子的情形。

如果一个菱形三十面体的棱长为a，那幺其体积为,表面积为,内切球半径为,中交球半径为

In geometry, the rhombic triacontahedron, sometimes simply called the triacontahedron as it is the most common thirty-faced polyhedron, is a convex polyhedron with 30 rhombic faces. It has 60 edges and 32 vertices of two types. It is a Catalan solid, and the dual polyhedron of the icosidodecahedron. It is a zonohedron.