This cyclic olefin resin composition (P) contains: a cyclic olefin resin (A) that contains a specific structure and has a softening temperature (TMA) of from 120°C to 200°C (inclusive) and an aromatic vinyl polymer (B). When the total of the cyclic olefin resin (A) and the aromatic vinyl polymer (B) contained in this cyclic olefin resin composition (P) is taken as 100 parts by mass, the content of the cyclic olefin resin (A) is from 50 parts by mass to 89 parts by mass (inclusive) and the content of the aromatic vinyl polymer (B) is from 11 parts by mass to 50 parts by mass (inclusive). The aromatic vinyl polymer (B) contains a hydrogenated product [B-1] of a block copolymer having an aromatic vinyl block (b1) and a block (b2) wherein an aromatic vinyl is copolymerized with a conjugated diene； and the refractive index and the Shore A hardness of the hydrogenated product [B-1] of a block copolymer are within specific ranges.
