Pârâul Sec may refer to: Pârâul Sec, a tributary of the Brătei in Dâmbovița County Pârâul Sec, a tributary of the Costești in Vâlcea County Pârâul Sec, a tributary of the Dămuc in Neamț County Pârâul Sec, a tributary of the Lotru in Vâlcea County Pârâul Sec (Olt), a tributary of the Olt in Vâlcea County Pârâul Sec, a tributary of the Prahova in Brașov County Pârâul Sec, a tributary of the Rudăreasa in Vâlcea County