Disclosed is an O/W emulsion composition which has excellent ultraviolet blocking ability, formulation stability and feeling of use. The O/W emulsion composition is characterized by containing the component (a) and the component (b) described below, and is also characterized in that emulsion particles that contain the component (a) have an average particle diameter of 800 nm or less.(a) an organic ultraviolet absorbent which contains the following (a1), (a2) and (a3)(a1) octocrylene(a2) ethylhexyl methoxycinnamate(a3) 4-t-butyl-4'-methoxydibenzoylmethane(b) a polyoxyethylene-polyoxyalkylene alkyl ether block polymer represented by general formula (1) or (2)R
