Keio (disambiguation)

Keio may refer to:

Keiō (慶応), a Japanese era name
Keio University (慶應義塾大学), a Tokyo University
Keio Corporation, a Tokyo-based transportation company
Keio Flying Squadron series or Keio Yuugekitai, the name of a video game series released on the Sega Mega CD\Sega CD, Sega Saturn, and Sony Playstation consoles

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