A combustion noise suppression control apparatus for an internal combustion engine that corrects a pilot injection amount based on a detection value of an in-cylinder pressure sensor that detects an in-cylinder pressure of the internal combustion engine, comprising: a sound pressure level calculation process unit that is configured to calculate a frequency distribution of a sound pressure level resulting from combustion of fuel of a pilot injection, wherein an in-cylinder pressure resulting from the combustion of fuel of pilot injection is extracted from a relationship between a crank angle and the in-cylinder pressure and the frequency distribution of the sound pressure level is generated by subjecting the in-cylinder pressure resulting from the combustion of fuel of the pilot injection to Fourier transform; a storage unit that is configured to store a predetermined threshold of the sound pressure level independently set for each of a plurality of frequencies; and a pilot correction process unit that is configured to correct the pilot injection amount when the sound pressure level calculated by the sound pressure level calculation process unit exceeds the predetermined threshold at a frequency at which the predetermined threshold is set, wherein an excess amount calculation process unit that is configured to calculate an excess amount as an amount of excess over the threshold when the sound pressure level calculated by the sound pressure level calculation process unit exceeds the threshold at a frequency at which the threshold is set, wherein the pilot correction process unit is configured to correct the pilot injection amount such that the pilot injection amount decreases as the excess amount increases. a sound pressure level calculation process unit that is configured to calculate a frequency distribution of a sound pressure level resulting from combustion of fuel of a pilot injection, wherein an in-cylinder pressure resulting from the combustion of fuel of pilot injection is extracted from a relationship between a crank angle and the in-cylinder pressure and the frequency distribution of the sound pressure level is generated by subjecting the in-cylinder pressure resulting from the combustion of fuel of the pilot injection to Fourier transform; a storage unit that is configured to store a predetermined threshold of the sound pressure level independently set for each of a plurality of frequencies; and a pilot correction process unit that is configured to correct the pilot injection amount when the sound pressure level calculated by the sound pressure level calculation process unit exceeds the predetermined threshold at a frequency at which the predetermined threshold is set, wherein an excess amount calculation process unit that is configured to calculate an excess amount as an amount of excess over the threshold when the sound pressure level calculated by the sound pressure level calculation process unit exceeds the threshold at a frequency at which the threshold is set, wherein the pilot correction process unit is configured to correct the pilot injection amount such that the pilot injection amount decreases as the excess amount increases.