Disclosed are a ferrite powder for bonded magnet and a resin composition for bonded magnet, which have good moldability and good mechanical strength especially when quenched during injection cooling and enable to obtain a bonded magnet molded body having excellent magnetic characteristics. Also disclosed is a bonded magnet molded body such as a magnet roll using the ferrite powder and the composition. Specifically disclosed is a ferrite powder for bonded magnet onto/in which phosphorus is adsorbed or contained.This ferrite powder for bonded magnet is characterized in that the phosphorus content in the ferrite is 120-5000 mg/kg (0.012-0.5% by weight) in terms of P.