Rakuten Viki is an American video streaming website. It streams videos similar to other services, but also allows users to subtitle content available in 200 languages as well as provides original programming. Headquartered in San Mateo, California,[1] it has offices in Singapore, Tokyo, Japan, and Seoul, South Korea.

The name Viki is a portmanteau of the words video and Wiki, drawing on the latter companies' use of volunteers for content management.[3] The company won the Crunchie award for best international start-up company in January 2011.