Toshio Iwasaki, Japanese hydraulics engineer, investigator. Decorated Order of the Rising Sun (Japan); recipient Association of Japan Harbour Engineering Investigation award, 1979, Kahoku-Bunka Sho award Kahoku-Bunka Jigyo-Dan, 1983, Investigation award Tsunami Commission, Victoria, Canada, 1985. Member Japan Society Civil Engineers (honorary; award for contributions to civil engineering 2002).