Here is a handy reference to radio related standards organizations around the world. One of the best things about standards is that there are so many of them. All kidding aside, there is a wealth of information to be found via these links.

International
United States
- ANSI
- Electrostatic Discharge Association
- FCC Office of Engineering and Technology - RF safety
- NEMA -National Electrical Manufacturers Association
- Telecommunications Industry Association - Project 25
- United States Geological Survey - Geological Hazards Team
- United States Geological Survey - Earthquake Hazards Program