Hideo Hatoyama

Hideo Hatoyama (1884 – 1946) was a Japanese jurist whose writings about civil law were influential in pre-World War II Japan.

After studies in Tokyo, France and Germany, he taught law at Tokyo from 1916 to 1926, after which he worked as a lawyer and left his professorship to his student Sakae Wagatsuma. He wrote influential treatises and textbooks on legal transactions (1910) and the law of obligations (1916), but his ideas fell out of fashion after Izotaro Suehiro's attacks on German-style jurisprudence of concepts.

Hatoyama was part of the prominent Hatoyama family. His father Kazuo Hatoyama was speaker of the House of Representatives of Japan during the Meiji era, and his brother Ichiro Hatoyama was an influential politician and minister in the 1930s and 40s. Through him, Hideo Hatoyama was able to exert great influence on Japanese jurisprudence.