June 15 – Sanriku earthquake: One of the most destructive seismic events in Japanese history. The 8.5 magnitude earthquake occurred at 19:32 (local time), approximately off the coast of Iwate Prefecture, Honshu. It resulted in two tsunamis which destroyed about 9,000 homes and caused at least 22,000 deaths. The waves reached a record height of ; more than a meter lower than those created after the 2011 TÃ Âhoku earthquake which triggered the Fukushima Daiichi nuclear disaster.
December 28 – Nippon Flower Mills (Nipun) was founded.
Unknown date – Penta-Ocean construction company founded
Unknown date – Kotaro Mikamo reports the first results of a double-eyelid procedure for aesthetic purposes.