An oil-in-water silicone emulsion composition for a release film of a multilayer ceramic capacitor (MLCC), a semiconductor interlayer insulating film, a capacitor film, or a thermal conduction film, comprising components to: a component: 20 to 60 parts by mass of an organopolysiloxane resin that has an average composition formula represented by the general formula, and contains 1 to 5% by mole of an alkenyl group bonded to a silicon atom, 10 to 90% by mole of an M unit represented by the general formula, 0 to 90% by mole of a T unit represented by the general formula, and 5 to 90% by mole of a Q unit represented by the general formula, and in which a molar ratio M/Q of the M unit to the Q unit is 0.1 to 4 and a molar ratio T/Q of the T unit to the Q unit is 0 to 1,000, (an amount in parts by mass is represented when the whole mass of the composition is 100 parts by mass, and hereinafter, the amount of each component is represented in the same manner) (Chemical formula 1) R 1 a R 2 b SiO (4-a-b)/2 (wherein R 1 is the same or different monovalent hydrocarbon group containing no aliphatic unsaturated group, R 2 is an alkenyl group, a is 0.999 to 2.999, b is 0.001 to 2, and a + b is 1 to 3) (wherein R 3 is independently a substituted or unsubstituted monovalent hydrocarbon group having 1 to 20 carbon atoms and no aliphatic unsaturated bond, R 4 is independently a substituted or unsubstituted alkenyl group having 2 to 20 carbon atoms, R 5 is a substituted or unsubstituted alkenyl group having 1 to 20 carbon atoms, and c is an integer of 0 to 3.); a component: 5 to 30 parts by mass of an organohydrogenpolysiloxane that has an average composition formula represented by the general formula, and contains two or more hydrogen atoms bonded to silicon atoms, (Chemical formula 5) R 6 d H e SiO (4-d-e)/2 (wherein R 6 is the same or different monovalent hydrocarbon group containing no aliphatic unsaturated group, d is 0.999 to 2.999, e is 0.001 to 2, and d + e is 1 to 3); a component: 1 to 10 parts by mass of a nonionic surfactant; a component: 1 to 500 ppm of a platinum-based catalyst relative to the amount of the component; and a component: 30 to 80 parts by mass of water, wherein the content of the methyl group in the solid content in this release agent composition is 5% by mass or more, wherein the content of the methyl group is a calculated value based on the amount of used raw material of the composition. a component: 20 to 60 parts by mass of an organopolysiloxane resin that has an average composition formula represented by the general formula, and contains 1 to 5% by mole of an alkenyl group bonded to a silicon atom, 10 to 90% by mole of an M unit represented by the general formula, 0 to 90% by mole of a T unit represented by the general formula, and 5 to 90% by mole of a Q unit represented by the general formula, and in which a molar ratio M/Q of the M unit to the Q unit is 0.1 to 4 and a molar ratio T/Q of the T unit to the Q unit is 0 to 1,000, (an amount in parts by mass is represented when the whole mass of the composition is 100 parts by mass, and hereinafter, the amount of each component is represented in the same manner) (Chemical formula 1) R 1 a R 2 b SiO (4-a-b)/2 (wherein R 1 is the same or different monovalent hydrocarbon group containing no aliphatic unsaturated group, R 2 is an alkenyl group, a is 0.999 to 2.999, b is 0.001 to 2, and a + b is 1 to 3) (wherein R 3 is independently a substituted or unsubstituted monovalent hydrocarbon group having 1 to 20 carbon atoms and no aliphatic unsaturated bond, R 4 is independently a substituted or unsubstituted alkenyl group having 2 to 20 carbon atoms, R 5 is a substituted or unsubstituted alkenyl group having 1 to 20 carbon atoms, and c is an integer of 0 to 3.); a component: 5 to 30 parts by mass of an organohydrogenpolysiloxane that has an average composition formula represented by the general formula, and contains two or more hydrogen atoms bonded to silicon atoms, (Chemical formula 5) R 6 d H e SiO (4-d-e)/2 (wherein R 6 is the same or different monovalent hydrocarbon group containing no aliphatic unsaturated group, d is 0.999 to 2.999, e is 0.001 to 2, and d + e is 1 to 3); a component: 1 to 10 parts by mass of a nonionic surfactant; a component: 1 to 500 ppm of a platinum-based catalyst relative to the amount of the component; and a component: 30 to 80 parts by mass of water, wherein the content of the methyl group in the solid content in this release agent composition is 5% by mass or more, wherein the content of the methyl group is a calculated value based on the amount of used raw material of the composition.