A photochromic curable composition comprising (A) a polymerizable monomer component that contains a (meth)acrylic polymerizable monomer (X), and (B) a photochromic compound, wherein the (meth)acrylic polymerizable monomer (X) is constituted by 80 to 97 parts by mass of a polyfunctional monomer (Xp) having not less than two (meth)acrylic groups in a molecule thereof, and 3 to 20 parts by mass of a monofunctional monomer (Xm) having one (meth)acrylic group in a molecule thereof, the monofunctional polymerizable monomer (Xm) is constituted by an epoxy group-containing monomer (Xm1) and an isocyanate group-containing monomer (Xm2), and the isocyanate group-containing monomer (Xm2) and the epoxy group-containing monomer (Xm1) are contained at a mass ratio of Xm2/Xm1=3 to 40.