The fruits are an integral part of human diet due to its nutritional value and large number of bioactive components with positive beneficial effect on human and normal functioning of the organism. Among numerous types of fruit, the cherries stand out as rich source of antioxidants. One of the most known in Dalmatia is Maraska cherry variety, popular for its high nutritional value and good biological effect on human health. In this paper the phenolic composition and antioxidant activity of pure Maraska sour cherry juice and a juice with addition of hemp extract were examined. The juice colour parameters, total phenols, flavonoids and non-flavonoids (Folin-Ciocalteu method), anthocyanins (by bisulphite bleaching method) and antioxidant activity (by the method of determining the reducing activity-FRAP and the ability to capture free radical molecules 2,2-diphenyl-1-picrylhydrazyl-DPPH) were determined. The addition of industrial hemp extract to cherry juice did not significantly improve the antioxidant activity or the phenolic composition of the pure juice. The results indicated a higher proportion of total phenolics (5630,56 mg GAE/L) and anthocyanins (2858,33 mg cyanidin/L) in pure juice compared to the juice with hemp extract (5486,11 mg GAE/L of total phenols and 2352,58 mg cyanidin/L). The reducing power of the pure juice was significantly higher, while juice with the addition of hemp extract showed a slightly better ability to capture radicals. The results confirm that the pure Maraska cherry juice, with and without hemp, is a rich source of phenolics with strong antioxidant potential that can contribute to the overall health.