Benzo[ghi]perylene is a polycyclic aromatic hydrocarbon with the chemical formula C22H12.

Benzo[ghi]perylene occurs naturally in crude oil and coal tar.

It is a product of incomplete combustion and is found in tobacco smoke, automobile exhausts, industrial emissions, grilled meat products and edible oils.

[1] The compound accumulates strongly in organisms and the environment, and is suspected to be mutagenic and carcinogenic.

Hokkaidoite [ja], a natural crystalline mineral of this compound, is found in Hokkaido, Japan.