Nagayoshi Iwahori (岩堀 長慶, Iwahori Nagayoshi; 1926 to 29 May 2011) was a Japanese mathematician who worked on algebraic groups over local fields who introduced Iwahori–Hecke algebras and Iwahori subgroups.
Source: “Nagayoshi Iwahori”, English Wikipedia (CC BY-SA 4.0), excerpt