The lubricating oil composition of the present invention comprises a base oil for lubricating oil, (A) at least one species selected from the phosphorus compounds represented by the following General Formula (1) or (2) as well as metal salts (excluding molybdenum salts) and amine salts thereof, and (B) an organic molybdenum compound not containing sulfur as a constituent element (in the formula, R1 and R4 represent hydrocarbon groups having 1 to 30 carbons, R2, R3, R5 and R6 represent hydrogen atoms or hydrocarbon groups having 1 to 30 carbons, X1 to X7 represent oxygen atoms or sulfur atoms, and n represents 0 or 1).