Thís research deals with the levels of aflatoxin contamination ín the different types of peanut kernels, as defined by the Brazilian Officíal Classification. The established types of kernels are moldy, germinated, immature, fermented, ínjured, with skin, without skin, broken and undeveloped.From each 9 lots of shelled peanuts of the Tatu variety, whích were known to be heavily contaminated (by previous analyses) samples of twenty-kg were taken. The kernels were separated, according to the officíal classificatíon, and analyzed to check for aflatoxins distribution in each type of kernel.The aflatoxin contamination was higher in the moldy type (13,921 µg/kg), followed by germinated (7,046 µg/kg), fermented (4,028 µg/kg), immature (3,609 µg/kg), undeveloped (1,527 µg/kg) and injured (760 µg/kg).Together, these kemels accounted for 97.16% of the total aflatoxins of the lot.xii The segregation of these types of kernels would help milling units to improve the peanut quality, provided the aflatoxin levei of the lot is not excessively high.