The invention provides a grease composition containing a urea thickener represented by formula (1): €ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒR 1 -NHCONH-R 2 -NHCONH-R 3 €ƒ€ƒ€ƒ€ƒ€ƒ(1) (wherein R 2 is a bivalent aromatic hydrocarbon group havin...