Peter de Rivaux
 Peter de Rivaux or Peter de Rivalis (died 1262) was an influential Poitevin courtier at the court of Henry III of England. He was related to Peter des Roches being a nephew (or possibly a son).He was in effect Henry's chief minister from 1232 onwards for a short period holding positions in the king's household and being installed as sheriff (or granted the power to appoint sheriffs in his stead) for some 21 shires.