Under 35s Reinsurance Group
- Group engaged in educational and social activities for young professionals in the reinsurance market.
- http://www.under35s.com/

The Reinsurance Research Council (RRC)
- An organization representing professional property/casualty reinsurers registered in Canada.
- http://www.rrccanada.org

Reinsurance Association of America
- Non-profit trade association of US property and casualty reinsurers and reinsurance brokers.
- http://www.reinsurance.org

Intermediaries and Reinsurance Underwriters Association (IRU)
- Organization of reinsurance intermediaries and companies engaged in the assumption or placement of property/casualty treaty reinsurance.
- http://www.irua.com/

Brokers and Reinsurance Markets Association
- A forum for treaty reinsurance professionals.
- http://www.brma.org/