A photochromic curable composition comprising: as radically polymerizable component, a silsesquioxane component having radically polymerizable groups and a bifunctional radically polymerizable monomer represented by the following general formula; and a photochromic compound; wherein, a is a number of 0 to 30, and b is a number of 0 to 30 on condition that an average value of a + b is 2 to 30, R 1, R 2, R 3 and R 4 are each a hydrogen atom or a methyl group, and A is a divalent organic group selected from the following group on condition that the number of carbon atoms is 1 to 20; alkylene group; unsubstituted phenylene group; phenylene group having, as a substituent, a halogen atom or an alkyl group having 1 to 4 carbon atoms; and a divalent group represented by the following formula; wherein in the formula, R 5 and R 6 are alkyl groups having 1 to 4 carbon atoms or halogen atoms, c and d are integers of 0 to 4, 6-membered ring B is a benzene ring or a cyclohexane ring, and when the 6-membered ring B is the benzene ring, X is a divalent group represented by -O-, -S-, -S 2 -, -C -, -CH 2 -, -CH=CH-, -C(CH 3) 2 -, -C(CH 3)(C 6 H 5)- or by the following formula (1c-1), and when the 6-membered ring B is the cyclohexane ring, X is a divalent group represented by -O-, -S-, -CH 2 -or -C(CH 3) 2 -; wherein said silsesquioxane component contains said radically polymerizable groups in a number of 70 to 100% per the total number of the substituents bonded to the silicon atoms contained in the silsesquioxane component, and wherein said silsesquioxane component is contained in an amount of 1 to 300 parts by mass per 100 parts by mass of the bifunctional radically polymerizable monomer. as radically polymerizable component, a silsesquioxane component having radically polymerizable groups and a bifunctional radically polymerizable monomer represented by the following general formula; and a photochromic compound; wherein, a is a number of 0 to 30, and b is a number of 0 to 30 on condition that an average value of a + b is 2 to 30, R 1, R 2, R 3 and R 4 are each a hydrogen atom or a methyl group, and A is a divalent organic group selected from the following group on condition that the number of carbon atoms is 1 to 20; alkylene group; unsubstituted phenylene group; phenylene group having, as a substituent, a halogen atom or an alkyl group having 1 to 4 carbon atoms; and a divalent group represented by the following formula; wherein in the formula, R 5 and R 6 are alkyl groups having 1 to 4 carbon atoms or halogen atoms, c and d are integers of 0 to 4, 6-membered ring B is a benzene ring or a cyclohexane ring, and when the 6-membered ring B is the benzene ring, X is a divalent group represented by -O-, -S-, -S 2 -, -C -, -CH 2 -, -CH=CH-, -C(CH 3) 2 -, -C(CH 3)(C 6 H 5)- or by the following formula (1c-1), and when the 6-membered ring B is the cyclohexane ring, X is a divalent group represented by -O-, -S-, -CH 2 -or -C(CH 3) 2 -; a is a number of 0 to 30, and b is a number of 0 to 30 on condition that an average value of a + b is 2 to 30, R 1, R 2, R 3 and R 4 are each a hydrogen atom or a methyl group, and A is a divalent organic group selected from the following group on condition that the number of carbon atoms is 1 to 20; alkylene group; unsubstituted phenylene group; phenylene group having, as a substituent, a halogen atom or an alkyl group having 1 to 4 carbon atoms; and a divalent group represented by the following formula; wherein in the formula, R 5 and R 6 are alkyl groups having 1 to 4 carbon atoms or halogen atoms, c and d are integers of 0 to 4, 6-membered ring B is a benzene ring or a cyclohexane ring, and when the 6-membered ring B is the benzene ring, X is a divalent group represented by -O-, -S-, -S 2 -, -C -, -CH 2 -, -CH=CH-, -C(CH 3) 2 -, -C(CH 3)(C 6 H 5)- or by the following formula (1c-1), and when the 6-membered ring B is the cyclohexane ring, X is a divalent group represented by -O-, -S-, -CH 2 -or -C(CH 3) 2 -; alkylene group; unsubstituted phenylene group; phenylene group having, as a substituent, a halogen atom or an alkyl group having 1 to 4 carbon atoms; and a divalent group represented by the following formula; wherein in the formula, R 5 and R 6 are alkyl groups having 1 to 4 carbon atoms or halogen atoms, c and d are integers of 0 to 4, 6-membered ring B is a benzene ring or a cyclohexane ring, and when the 6-membered ring B is the benzene ring, X is a divalent group represented by -O-, -S-, -S 2 -, -C -, -CH 2 -, -CH=CH-, -C(CH 3) 2 -, -C(CH 3)(C 6 H 5)- or by the following formula (1c-1), and when the 6-membered ring B is the cyclohexane ring, X is a divalent group represented by -O-, -S-, -CH 2 -or -C(CH 3) 2 -; R 5 and R 6 are alkyl groups having 1 to 4 carbon atoms or halogen atoms, c and d are integers of 0 to 4, 6-membered ring B is a benzene ring or a cyclohexane ring, and when the 6-membered ring B is the benzene ring, X is a divalent group represented by -O-, -S-, -S 2 -, -C -, -CH 2 -, -CH=CH-, -C(CH 3) 2 -, -C(CH 3)(C 6 H 5)- or by the following formula (1c-1), and when the 6-membered ring B is the cyclohexane ring, X is a divalent group represented by -O-, -S-, -CH 2 -or -C(CH 3) 2 -;