Hayashi Yūzō (林 有造, 21 September 1842 – 29 December 1921) was a politician and cabinet minister in the pre-war Empire of Japan.

He was sent on a mission to Europe in August 1870 to monitor the Franco-Prussian War, and arrived in Berlin in October together with Ōyama Iwao, Shinagawa Yajirō, and Arichi Shinanojō.

[1] After his return to Japan in May 1871, he worked with Itagaki Taisuke but resigned in 1873 due to his disagreement with government policy in the Seikanron debate.

[2] One of the leading advocates of the rebellion, Hayashi also planned to seize a Mitsubishi steamer and attack the government arsenal at Osaka.

[2] He rejoined the cabinet again in 1900 under the 4th Itō Hirobumi administration as Minister of Agriculture and Commerce and assisted in the formation of the Rikken Seiyūkai political party.