Engineering is a field and a career that has maximum impact on human life. Given the weight it carries, it is important for engineers world over to unite and share knowledge, so that their accomplishments are not only omnipotent, but also safe, efficient and cost effective. Some of the most important and common Engineering Organizations are listed here. you can find a lot more on the internet.
1. The American Society of Mechanical Engineers
2. The Institute of Electrical and Electronics Engineers
3. Society of Automotive Engineers
4. American Institute of Chemical Engineers