An O / W emulsion composition having excellent ultraviolet light blocking properties, preparation stability and feeling of use, wherein an oily organic ultraviolet absorbent such as octocrylene and a solid organic ultraviolet absorbent are blended. The O / W emulsion composition contains the components (a)-(c) mentioned below, and an oil phase containing the component (a) has an average particle diameter of not more than 700 nm. (a) an organic ultraviolet absorbent containing (a1) octocrylene, which is in an oil form at 20 DEG C (b) an organic ultraviolet absorbent selected from (b1) bis-ethylhexyloxyphenol methoxyphenyl triazine and (b2) methylene bis-benztriazolyl tetramethylbutylphenol, which is in a solid state at 20 DEG C (c) a polyoxyethylene / polyoxyalkylene alkyl ether block polymer represented by general formula (1) or (2): R1O-(PO)m-(EO)n-H (1) (In the formula, R1 represents a hydrocarbon group having 16-18 carbon atoms; PO represents an oxypropylene group; EO represents an oxyethylene group; PO and EO are added in blocks; and m and n respectively represent average mole numbers of added PO and EO and satisfy 70 > m > 4, 70 > n > 10 and n > m.) R2O-(AO)p-(EO)q-R3 (2) (In the formula, R2 and R3 may be the same or different and each represents a hydrocarbon group having 1-4 carbon atoms; AO represents an oxyalkylene group having 3-4 carbon atoms; EO represents an oxyethylene group; AO and EO are added in blocks; and p and q respectively represent average mole numbers of added AO and EO and satisfy 1 = p = 70, 1 = q = 70 and 0.2 < (q / (p + q)) < 0.8.)