Oligosaccharides wani nau'in carbohydrate ne wanda ya ƙunshi ƙananan adadin ƙwayoyin sukari (monosaccharide) waɗanda aka haɗa tare. Ya ƙunshi raka'a biyu zuwa goma monosaccharide, yawanci glucose, fructose, ko galactose, hade da glycosidic bonds. Oligosaccharides matsakaici ne a cikin girman tsakanin monosaccharides da polysaccharides. Ana yawan samun su a cikin abinci daban-daban kuma suna iya samun kayan aiki da kayan abinci mai gina jiki. Misalan oligosaccharides sun haɗa da raffinose, stachyose, da maltotriose.