Thomas Wright Moir Cameron (29 April 1894 – 1 January 1980) was a Canadian veterinarian and parasitologist.

Born in Glasgow, Scotland, he received a Bachelor of Science degree in veterinary science, a Master of Arts degree in parasitology, a Doctor of Philosophy (PhD) degree in parasitology, and a Doctor of Science degree in zoology from the University of Glasgow and University of Edinburgh. During World War I, he served with the Highland Light Infantry and as a captain in the Royal Flying Corps.

After completing his PhD he held posts at the Institute of Agricultural Parasitology, London (1923–1925), and the London School of Hygiene and Tropical Medicine (1925–1932). In 1932, he emigrated to Canada to assume the position of Professor of Parasitology, and was appointed the founding director of the Institute of Parasitology at Macdonald College, McGill University.

He served as president of the Royal Society of Canada (1957–1958), Canadian Society of Microbiologists (1960), Canadian Society of Zoologists (1961–1962), and the World Federation of Parasitologists (1964–1970).

He is the author of The Parasites of Man in Temperate Climates (University of Toronto Press, 1946), The Parasites of Domestic Animals: A Manual for Veterinary Students and Surgeons (Lippincott, 1951), and Parasites and Parasitism (Methuen, 1956).