CSIO may refer to:
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Central Scientific Instruments Organisation
Central Scientific Instruments Organisation is a Chandigarh, India-based national laboratory dedicated to research, design and development of scientific, and industrial instruments. It is one of the constituent laboratories of the Council of Sci ...
, an Indian national laboratory dedicated to research, design and development of scientific and industrial instruments
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Centre for Study of Insurance Operations
CSIO, the Centre for Study of Insurance Operations, is the Canadian property and casualty insurance industry's nonprofit association of insurers, brokers and software providers. Much of its work is in the development of data standards, especially ...
, the Canadian property and casualty insurance industry's nonprofit association of insurers, brokers and software providers
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City State of the Invincible Overlord
''City State of the Invincible Overlord'' is a fantasy role-playing game supplement originally published by Judges Guild in 1976. It was the first published fantasy role-playing game city setting, designed for use with ''Dungeons & Dragons'' (''D& ...
, a 1976
Judges Guild
Judges Guild is a game publisher that has been active since 1976. The company created and sold many role-playing game supplements, periodicals and related materials, but became best known during the late 1970s and early 1980s as one of the leadin ...
product that was the first published fantasy role-playing game city setting
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Concours de Saut International Officiel, a ranking system for the equestrian competition show jumping
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