To provide a plastic lens which can absorb light having a wavelength of 400 to 420 nm with high efficiency but is reduced in the absorption of light having a wavelength of around 420 nm or longer, isless affected by harmful light, rarely undergoes yellow coloration and therefore has excellent appearance, rarely undergoes yellowish discoloration over time, and has excellent heat resistance, lightresistance and optical performance, particularly an excellent Abbe number. The plastic lens is characterized by comprising: an ultraviolet ray absorber represented by formula (I) (wherein R1 to R8 independently represent a monovalent group such as a hydrogen atom; and R9 represents a monovalent sulfur-containing group represented by formula (i) (wherein R10 represents a bivalent hydrocarbon grouphaving 1 to 20 carbon atoms or the like; R11 represents a bivalent hydrocarbon group having 1 to 20 carbon atoms or the like; R12 represents a monovalent hydrocarbon group having 1 to 20 carbon atoms;the total number of carbon atoms in R10, n R11 and R12 is 30 or less; m represents an integer of 0 or 1; and n represents an integer of 0 to 3)); and a resin material.