The present invention provides recording paper and label paper with excellent waterproof properties, reduced curling from heat when used as recording paper in a heat-fixing type electrophotographic printer, a heat-fixing type electrophotographic copier or a direct heat-sensitive printer, excellent paper delivery properties, and printable continuously when a large number of sheets of this recording paper is printed. A further object of the invention is to provide recording paper and label paper with excellent waterproof properties as the base materials of masking seals and re-covering-preventing labels, and requiring no special process to start peeling. The recording paper and label paper using the same are characterized in that they comprise a thermoplastic resin and a resin film (A) containing at least either an inorganic fine powder or an organic filler, and that the crystallization heat is 60 J/cm<3> or less.