Kuroda Nagamasa(黒田 長政, December 3, 1568 – August 29, 1623) was a daimyo during the late Azuchi-Momoyama and Early Edo Period. He was the son of Toyotomi Hideyoshi's chief strategist and adviser Kuroda Kanbei.

In 1577, when Nagamasa was a small child, his father was condemned as a spy by Oda Nobunaga. Nagamasa was kidnapped and nearly killed as a hostage. Takenaka Hanbei ended up rescuing him. After Oda Nobunaga was killed in Honnō-ji Incident, Nagamasa served Toyotomi Hideyoshi with his father and participated in the invasion of the Chugoku Region.