We achieved a significant increase in the ingot size of La-doped PbWO 4 single crystals to 65 mm in diameter and 300 mm in length by using the Czochralski technique and three times of recrystallization. Four blocks each with a typical size of 20 x 20 x 230 mm 3 were taken from an ingot. The optical as well as the scintillation characteristics of the large-size crystals, including the radiation hardness, were found to be similar to or even better than those of smaller crystals. The radiation-induced absorption coefficient μ i r was as small as 0.5-1 m - 1 at 10 7 rad of 6 0 Co γ-ray irradiation.