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|Hybrid parentage||'Nourin No.1' × 'Nourin No.22'|
|Subspecies||O. s. subsp. japonica|
|Cultivar group||temperate japonica|
|Cultivar||Nourin No.100 (Etsunan No.17)|
Koshihikari was first created in 1956 by combining 2 different strains of Nourin No.1 and Nourin No.22 at the Fukui Prefectural Agricultural Research Facility. It is one of the most highly grown varieties of rice in Japan  and is exported to other countries as a premium product.
- Highly susceptible to blast disease
- Its stem collapses easily when mature
- Ohtsubo, Ken'ichi; Okunishi, Tomoya; Suzuki, Koitaro (2005). "Processed novel foodstuffs from pregerminated brown rice". In Toriyama, K; Heong, KL; Hardy, B (eds.). Rice is Life: Scientific Perspectives for the 21st Century. International Rice Research Institute. ISBN 9789712202049.
- Kodachi, Hisao (2018-10-16). "Japan's China-bound rice exports set to soar". Nikkei Asian Review. Retrieved 2019-01-24.