A non-thermofusible phenol resin powder, wherein: (i) the average particle diameter of particles constituting the non-thermofusible phenol resin powder is not more than 20 μm and the single particle ratio expressed in the following formula is at least 0.7: single particle ratio = the number of primary particles not forming secondary aggregates / the total number of the primary particles, the single particle ratio being determined by dispersing the phenol resin powder in water droplets, making an optical microscope observation and counting the total number of primary particles and the number of single particles in a randomly selected visual field containing 300 primary particles; (ii) the coefficient of variation of a particle size distribution of the particles constituting the non-thermofusible phenol resin powder expressed in the following formula is not more than 0.6: coefficient of variation of particle size distribution = d 84 % − d 16 % / 2 × average particle diameter of the particles constituting the non − thermofusible phenol resin powder where d 84% and d 16% represent particle sizes exhibiting cumulative frequencies of 84% and 16% in a frequency distribution obtained by laser diffraction scattering respectively; (iii) non-thermofusible means that the phenol resin powder does not form a flat plate, the phenol resin particles are not deformed, and the phenol resin particles do not adhere to each other by fusion and/or welding when 5 g of a phenol resin powder sample is inserted between two stainless plates of 0.2 mm in thickness and pressed with a pressing machine previously heated to 100 °C with a total load of 50 kg for two minutes; and (iv) the average particle diameter denotes a value of a cumulative frequency of 50% in a frequency distribution obtained by a measuring method employing a laser diffraction particle size measuring apparatus. (i) the average particle diameter of particles constituting the non-thermofusible phenol resin powder is not more than 20 μm and the single particle ratio expressed in the following formula is at least 0.7: single particle ratio = the number of primary particles not forming secondary aggregates / the total number of the primary particles, the single particle ratio being determined by dispersing the phenol resin powder in water droplets, making an optical microscope observation and counting the total number of primary particles and the number of single particles in a randomly selected visual field containing 300 primary particles; (ii) the coefficient of variation of a particle size distribution of the particles constituting the non-thermofusible phenol resin powder expressed in the following formula is not more than 0.6: coefficient of variation of particle size distribution = d 84 % − d 16 % / 2 × average particle diameter of the particles constituting the non − thermofusible phenol resin powder where d 84% and d 16% represent particle sizes exhibiting cumulative frequencies of 84% and 16% in a frequency distribution obtained by laser diffraction scattering respectively; (iii) non-thermofusible means that the phenol resin powder does not form a flat plate, the phenol resin particles are not deformed, and the phenol resin particles do not adhere to each other by fusion and/or welding when 5 g of a phenol resin powder sample is inserted between two stainless plates of 0.2 mm in thickness and pressed with a pressing machine previously heated to 100 °C with a total load of 50 kg for two minutes; and (iv) the average particle diameter denotes a value of a cumulative frequency of 50% in a frequency distribution obtained by a measuring method employing a laser diffraction particle size measuring apparatus.