Cloud Appreciation Society

The Cloud Appreciation Society is a society founded by Gavin Pretor-Pinney from the United Kingdom in January 2005. The society aims to foster understanding and appreciation of clouds, and has over 42,000 members worldwide from 115 different countries, as of January 2017.

Yahoo named the society's website as "the most weird and wonderful find on the internet for 2005". The group and its founder were the focus of a BBC documentary Cloudspotting, based on Pretor-Pinney's book The Cloudspotter's Guide. During an episode of Taskmaster, comedien Hugh Dennis revealed he is a member of the society.

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