Ishii, Kikujiro (kēˌkōˌjērōˈĭshēˈ) [key], 1865–1945, Japanese career diplomat. He entered the foreign ministry after graduating from Tokyo Univ. with a degree in English law. In 1907–8 he helped negotiate the gentlemen's agreement to exclude Japanese immigrants to the United States. He was ambassador to France (1912–14), foreign minister (1915–16), and ambassador to the United States (1918–19). In 1917 he negotiated the Lansing-Ishii agreement with the United States. He participated in many international diplomatic conferences. He was a member of the privy council.