Data on the characteristic features of composition of oils sampled from 4 oil fields located on the Barents Sea coast of the Nenets Autonomous Okrug are presented. The predominance of acyclic compounds is established in composition of hydrocarbons (HC) of oils sampled at Perevoznoye, Toraveyskoye, and Myadseyskoye fields. The share of the acyclic HC in the oil of the Toboyskoye field is significantly lower. The predominance of biaromatic compounds over triaromatic ones is characteristic of all oils under study, while dimethyl substituted structures prevail among biaromatic compounds. The content of bicyclic terpanes which are characterized by the presence of nordrimans, drimans, and homodrimans is maximal in the oil from the Toboyskoye field, where cyclohexanes predominate over alkanes. The presence of dibenzofurans is registered only in the oil from the Toraveyskoye field, while dibenzothiophenes are present in all oil samples.