American Society of Clinical Oncology 
The information provided by ASCO is and aimed towards health professionals.
http://www.asco.org/The Barbados Cancer Society 
Dedicated to public education about cancer, as well as promoting prevention measures and efforts at early detection.
http://www.barbadoscancersociety.com
Cancer Research Institute 
Researching the science of cancer immunology.
http://www.cancerresearch.org/
NCI: Center for Cancer Research 
Details about the organization, including a mission statement, press releases, event calendar, research opportunities and a newsletter.
http://ccr.cancer.gov/
International Agency for Research on Cancer 
The World Health Organization's leading source for information about cancer. The mission is to coordinate and conduct research on causes and to develop scientific strategies for control.
http://www.iarc.fr/index.html
International Institute of Anticancer Research 
Information about the organization, AntiCancer Research journal, In Vivo journal, Cancer Genomics and Proteomics journal and related international conferences.
http://www.iiar-anticancer.org
International Psycho-Oncology Society 
A professional organization concerned with the psychosocial and behavioral dimensions of cancer.
http://www.ipos-society.org
M.D. Anderson: WHO Center for Supportive Cancer Care 
Learn about this World Health Organization center focused on bringing the latest in treatment and research to developing countries, especially in Asia and Latin America.
http://www.mdanderson.org/departments/ccscc
International Association of Cancer Registries 
Portal for links to registries worldwide. Gives information on the activities of the organization including software, publications, guidelines and standards.
http://www.iacr.com.fr
Modena Cancer Registry 
Italian entity that collects and presents information concerning tumors diagnosed in the province of Modena.
http://www.rtm.unimo.it
CancerWorld 
Coalition of international cancer organizations with an aim to bring providers together for the good of developed and lesser-developed countries.
http://www.cancerworld.org/
Cancer Therapy Evaluation Program 
CTEP is a program of the U.S. National Cancer Institute that provides support for clinical trials.
http://ctep.info.nih.gov/
Chemical Carcinogenesis Research Information System 
CCRI is a database sponsored by the National Cancer Institute containing data and information on carcinogens, mutagens and tumor promotors.
http://toxnet.nlm.nih.gov/cgi-bin/sis/htmlgen?CCRIS
caBIG 
An initiative of the U.S. National Cancer Institute to link researchers, physicians, and patients throughout the cancer community.
http://cabig.cancer.gov
Walker Cancer Research Institute, Inc. 
WCRI is dedicated to the discovery of innovative anticancer agents derived from chemical synthesis and natural products and aims to educate the public about early detection of cancer and treatment options. Gives details about the facilities, achievements and how you can help.
http://walkercri.org