Abstract: The purpose of the present invention is to provide an ink for dyeing a plastic lens, capable of favorably dyeing the plastic lens by a vapor transfer dyeing method, and a method of dyeing a plastic lens by using the ink. In the present invention, an ink for dyeing a plastic lens, the ink being applied by an ink jet printer, sublimated in vacuum and deposited on the plastic lens to dye the lens, wherein the ink includes at least one sublimatable disperse dye of an anthraquinone dye, a quinophthalone dye, and an azo dye of thiazole type.