Riken
Riken is
- a Japanese company: Ricoh
- a pre-war Japanese group of companies: Riken Corporation
- a Japanese research institute that emerged from a foundation of this group: RIKEN
- a municipality in the canton of Aargau that was independent until 1901. It was merged with Balzenwil to form today's municipality of Murgenthal, see Riken AG
See also: