American College of Veterinary Internal Medicine - Grants specialty certification in veterinary oncology and other disciplines such as neurology cardiology and internal medicine. Contains a list of board-certified veterinary oncology specialists by location.

American College of Veterinary Radiology - Radiation Oncology - Website for the professional society governing the speciality of veterinary radiation onology.

British Veterinary Oncology Study Group - A British organization interested in research into and treatment of veterinary cancers.

Feline Vaccine Associated Feline Sarcoma Task Force - Promotes research and education regarding feline vaccine-associated sarcoma.

Veterinary Cancer Society - International professional society dedicated to the treatment of cancer in animals. Has a veterinary oncologist finder to help owners find specialists in their geographic area.