The Tripartite Intervention or Triple Intervention was a diplomatic intervention by Russia, Germany, and France on 23 April 1895 over the harsh terms of the Treaty of Shimonoseki imposed by Japan on China that ended the First Sino-Japanese War. The goal was to stop Japanese expansion in China. The Japanese reaction against the Triple Intervention was one of the causes of the subsequent Russo-Japanese War.

The Treaty of Shimonoseki , also known as the Treaty of Maguan in China and Treaty of Bakan in the period before and during World War II in Japan, was an unequal treaty signed at the Shunpanrō hotel, Shimonoseki, Japan on April 17, 1895, between the Empire of Japan and Qing China, ending the First Sino-Japanese War.