A photocurable silicone composition comprising: 100 parts by mass of an organopolysiloxane represented by the average composition formula: R 1 a R 2 b SiO (4-a-b)/2 wherein, R 1 is an alkenyl group having from 2 to 12 carbons, R 2 is an alkyl group having from 1 to 12 carbons, an aryl group having from 6 to 12 carbons, or an aralkyl group having from 7 to 12 carbons; provided that, at least 30 mol% of R 2 are the aryl groups or the aralkyl groups; and "a" and "b" are positive numbers satisfying: 1 ≤ a + b ≤ 2.5 and 0.001 ≤ a/(a + b) ≤ 0.2; from 3 to 30 parts by mass of an organic compound having at least two ether bonds and at least one aliphatic carbon-carbon double bond in a molecule; a compound having at least two thiol groups in a molecule, in an amount that the amount of the thiol groups in the present component is from 0.2 to 2.0 mol per 1 mol of the total aliphatic carbon-carbon double bonds in the present composition; from 0.05 to 1.0 part by mass of a photoradical initiator having a phosphorus atom; and from 0.001 to 1.0 part by mass of a hindered phenol compound selected from pentaerythritol tetrakis[3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate], thiodiethylene bis[3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate], octadecyl-3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate, 2,4-dimethyl-6-(1-methylpentadecyl)phenol, diethyl[{3,5-bis(1,1-di-tert-butyl-4-hydroxyphenyl)methyl}phosphonate,3, 3',3",5,5',5"-hexane-tert-butyl-4-a,a',a"-(mesitylene-2,4,6-tolyl)tri-p-cresol, 4,6-bis(octylthiomethyl)-o-cresol, ethylenebis(oxyethylene)bis[3-(5-tert-butyl-4-hydroxy-m-tolyl)propionate], hexamethylene bis[3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate] and di-tert-butylhydroxytoluene. 100 parts by mass of an organopolysiloxane represented by the average composition formula: R 1 a R 2 b SiO (4-a-b)/2 wherein, R 1 is an alkenyl group having from 2 to 12 carbons, R 2 is an alkyl group having from 1 to 12 carbons, an aryl group having from 6 to 12 carbons, or an aralkyl group having from 7 to 12 carbons; provided that, at least 30 mol% of R 2 are the aryl groups or the aralkyl groups; and "a" and "b" are positive numbers satisfying: 1 ≤ a + b ≤ 2.5 and 0.001 ≤ a/(a + b) ≤ 0.2; from 3 to 30 parts by mass of an organic compound having at least two ether bonds and at least one aliphatic carbon-carbon double bond in a molecule; a compound having at least two thiol groups in a molecule, in an amount that the amount of the thiol groups in the present component is from 0.2 to 2.0 mol per 1 mol of the total aliphatic carbon-carbon double bonds in the present composition; from 0.05 to 1.0 part by mass of a photoradical initiator having a phosphorus atom; and from 0.001 to 1.0 part by mass of a hindered phenol compound selected from pentaerythritol tetrakis[3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate], thiodiethylene bis[3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate], octadecyl-3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate, 2,4-dimethyl-6-(1-methylpentadecyl)phenol, diethyl[{3,5-bis(1,1-di-tert-butyl-4-hydroxyphenyl)methyl}phosphonate,3, 3',3",5,5',5"-hexane-tert-butyl-4-a,a',a"-(mesitylene-2,4,6-tolyl)tri-p-cresol, 4,6-bis(octylthiomethyl)-o-cresol, ethylenebis(oxyethylene)bis[3-(5-tert-butyl-4-hydroxy-m-tolyl)propionate], hexamethylene bis[3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate] and di-tert-butylhydroxytoluene.