To provide an oral composition capable of improving adsorbability of a cationic bactericide to the plaque surface and securing stability or solubility or diffusibility in an oral cavity of the composition while using a cationic bactericide and an anionic surfactant in combination.SOLUTION: There is provided an oral composition which comprises the following components (A), (B) and (C): (A) an olefin sulfonic acid having 14 or more and 20 or less carbon atoms or its salt, (B) a hydroxy alkane sulfonic acid having 14 or more and 20 or less carbon atoms or its salt and (C) a cationic bactericide, wherein the total content of the component (A) and the component (B) is 0.01 mass% or more and 4 mass% or less and the content of the component (A) is 3 mass% or more and 50 mass% or less in the total content of the component (A) and the component (B).SELECTED DRAWING: None【課題】カチオン性殺菌剤とアニオン界面活性剤とを併用しながらも、歯表面へのカチオン性殺菌剤の吸着性を高めるとともに、組成物の安定性や口腔内における溶解性又は拡散性を有効に確保することのできる口腔用組成物に関する。【解決手段】次の成分(A)、(B)、及び(C): (A)炭素数14以上20以下のオレフィンスルホン酸又はその塩、 (B)炭素数14以上20以下のヒドロキシアルカンスルホン酸又はその塩、及び (C)カチオン性殺菌剤を含有し、成分(A)及び成分(B)の合計含有量が0.01質量%以上4質量%以下であり、かつ成分(A)の含有量が成分(A)及び成分(B)の合計含有量中に3質量%以上50質量%以下である口腔用組成物。【選択図】なし