GREASE COMPOSITION

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 having 6 to 15 carbon atoms; and R 1 and R 3 , which may be the same or different from each other, represent an alkyl group having 8 to 22 carbon atoms, cyclohexyl group or an aryl group having 6 to 12 carbon atoms); and a base oil containing at least one compound represented by formula (3): (wherein R 6 and R 7 , which may be the same or different from each other, represent a branched alkyl group having 10 to 26 carbon atoms, with the ratio of the number of moles of the alkyl groups represented by R 6 and R 7 where the carbon atom attached to the phenyl ring is a quaternary carbon atom being 40 to 95 mol% with respect to the total number of moles of the branched alkyl groups; and m and n are real numbers of 0 or more so as to satisfy the condition of 1.0‰¤m+n‰¤3.0).