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The objective of this work was to determine some bioactive compounds for four different rosehip species (Rosa L.), growing in the East Anatolia region of Turkey. The highest total phenolic, L-ascorbic acid contents and the highest total antioxidant capacity were found in R. canina. The total phenolic, total anthocyanin, total dry matter, and L-ascorbic acid contents and the total antioxidant capacity of the rosehip species ranged from 1081–6298 mg/100 g, 2.43–3.72 mg/100 g, 40.1–56.7%, 24.98–754.48 mg/100 g, and 10.04–97.95 mmol of Trolox equivalent/g (TE/g), respectively. The major organic acid in the rosehip species was found to be citric acid (0.48–1.05 g/100 g).