Hasegawa Kyūzō (Japanese: 長谷川久蔵, 1568[1] – July 13, 1593[2]) was the son of Hasegawa Tōhaku, and a painter of the Hasegawa school in the Azuchi–Momoyama period Japan.
Kyūzō was born as the first son between Tōhaku and his first wife Myōjō (Japanese: 妙浄, died 1579).
It is generally surmised that Kyūzō painted on the byōbu (wind screens) for Toyotomi Hideyoshi or other high-ranking Toyotomi supporter. Four of his works remain:
Tōhaku intended Kyūzō to be his heir, if it were not for his early death in his mid-20s. Kyūzō was highly acclaimed by Kanō Einō in Honchō Gashi (Japanese: 本朝画史) compiled in 1679 as that the "elegance of his work surpasses his father's, unmatched by none other in the Hasegawa school."