硅化铜（Cu₅Si）又名硅化五铜，是一种铜的二元硅化合物，为一种金属互化物，这意味着它的性质介于离子化合物和合金之间。可以通过加热铜与硅的混合物得到。

立方晶体，其中a = 0.6224 nm。不溶于水。

Copper silicide (Cu₅Si), also called pentacopper silicide, is a binary compound of silicon with copper. It is an intermetallic compound, meaning that it has properties intermediate between an ionic compound and an alloy. This a solid crystalline material is a silvery solid that is insoluble in water. It forms upon heating mixtures of copper and silicon.