Sulfur oxide yana nufin kowane fili da ya ƙunshi sulfur da atom ɗin oxygen. Mafi yawan sulfur oxides sune sulfur dioxide (SO2) da sulfur trioxide (SO3). Sulfur dioxide iskar gas ce mara launi tare da kamshi mai kamshi wanda ke fitowa a sararin samaniya musamman ta hanyar kona kasusuwan kasusuwa, kamar gawayi da mai. Yana da babbar gudummawa ga gurbatar iska kuma yana iya yin illa ga lafiyar ɗan adam da muhalli. Sulfur trioxide wani ruwa ne mara launi wanda yake da kuzari sosai kuma ana amfani dashi wajen samar da sulfuric acid.