PROBLEM TO BE SOLVED: To provide a bactericidal composition exhibiting bactericidal effects on various microorganism existing in living environment such as a bathroom.SOLUTION: There is provided the bactericidal composition containing: aromatic alcohol such as benzyl alcohol (a component), glycol ether ((b1 component) represented by RO-(CH-O)-H, where R represents an aliphatic hydrocarbon group having 3 to 8 carbon atoms or the like and n1 represents an integer of 1 to 8; glycol ether (b2 component) represented by RO-(CH-CH(CH)-O)-H, where R represents an aliphatic hydrocarbon group having 1 to 8 carbon atoms and n2 represents an integer of 1 to 8; water (c component); and a surfactant (d component). In the bactericidal composition, the total content of the (a) component and the (b) component which is selected from the (b1) and (b2) components is 1.6 mass% or more, the mass ratio of the total content of the (a) component and the (b) component and the content of the (d) component, (d)/[(a)+(b)] is 0.8 or less, and the total content of the (a) component, the (b) component and the (c) component is 80 mass% or more.【課題】浴室等の生活環境に存在する様々な微生物に対して優れた殺菌効果を発揮できる殺微生物用組成物を提供する。【解決手段】ベンジルアルコール等の芳香族アルコール(a成分)、RO-(C2H4-O)n1-H(式中、Rは、炭素数3~8の脂肪族炭化水素基等を表し、n1は1~8の整数を表す)で示されるグリコールエーテル(b1成分)、RO-(CH2-CH(CH3)-O)n2-H(式中、Rは炭素数1~8の脂肪族炭化水素基等を表し、n2は1~8の整数を表す)で示されるグリコールエーテル(b2成分)、水(c成分)、及び界面活性剤(d成分)を含有し、(a)成分と(b)成分の合計含有量が1.6質量%以上であり、(a)成分と(b)成分の合計含有量と(d)成分の含有量の質量比が、(d)/[(a)+(b)]で、0.8以下であり、(a)成分、(b)成分及び(c)成分の合計含有量が80質量%以上である、殺微生物用組成物。【選択図】なし