A polymerizable composition for an optical material, comprising: one or two or more compounds selected from the group consisting of component (A) and component (B); a polymerizable compound that includes a polyiso (thio) cyanate compound; and component (C) wherein (A) is an ester compound represented by General Formula , General Formula , or General Formula in General Formula , x is 9 to 17 and n represents an integer of 2 to 20, in General Formula , x + y is 9 to 17 and n represents an integer of 2 to 20, in General Formula , x + y + z is 9 to 15 and n represents an integer of 2 to 20; (B) is an ether compound represented by General Formula R 4 -O-R 5 in General Formula , R 4 represents a linear alkyl group having 10 to 20 carbon atoms, a branched alkyl group having 3 to 20 carbon atoms, a linear hydrocarbon group having 2 to 20 carbon atoms and having one or more unsaturated bonds, or a branched hydrocarbon group having 3 to 20 carbon atoms and having one or more unsaturated bonds, and R 5 represents a (poly)oxyalkylene group represented by General Formula - (CH 2 CHR 6 O) m H in General Formula , a plurality of present R 6 may be the same or different and each R 6 represents a hydrogen atom or a methyl group, and m represents an integer of 1 to 20; and (C) is (poly) alkylene glycol represented by General Formula HO(CH 2 CHR 7 O) p H in General Formula , a plurality of present R 7 may be the same or different and each R 7 represents a hydrogen atom or a methyl group, and p represents an integer of 1 to 20. one or two or more compounds selected from the group consisting of component (A) and component (B); a polymerizable compound that includes a polyiso (thio) cyanate compound; and component (C) (A) is an ester compound represented by General Formula , General Formula , or General Formula in General Formula , x is 9 to 17 and n represents an integer of 2 to 20, in General Formula , x + y is 9 to 17 and n represents an integer of 2 to 20, in General Formula , x + y + z is 9 to 15 and n represents an integer of 2 to 20; in General Formula , x is 9 to 17 and n represents an integer of 2 to 20, in General Formula , x + y is 9 to 17 and n represents an integer of 2 to 20, in General Formula , x + y + z is 9 to 15 and n represents an integer of 2 to 20; (B) is an ether compound represented by General Formula R 4 -O-R 5 in General Formula , R 4 represents a linear alkyl group having 10 to 20 carbon atoms, a branched alkyl group having 3 to 20 carbon atoms, a linear hydrocarbon group having 2 to 20 carbon atoms and having one or more unsaturated bonds, or a branched hydrocarbon group having 3 to 20 carbon atoms and having one or more unsaturated bonds, and R 5 represents a (poly)oxyalkylene group represented by General Formula - (CH 2 CHR 6 O) m H in General Formula , a plurality of present R 6 may be the same or different and each R 6 represents a hydrogen atom or a methyl group, and m represents an integer of 1 to 20; and (C) is (poly) alkylene glycol represented by General Formula HO(CH 2 CHR 7 O) p H in General Formula , a plurality of present R 7 may be the same or different and each R 7 represents a hydrogen atom or a methyl group, and p represents an integer of 1 to 20. <EOS>