Fredrick Kenneth Hare, CC OOnt FRSC (February 5, 1919 – September 3, 2002) was a Canadian climatologist and academic, who researched atmospheric carbon dioxide, climate change, drought, and arid zone climates and was a strong advocate for preserving the natural environment.

He was a strong advocate of protecting the natural environment and served on a wide variety of commissions and committees on subjects that included acid rain, desertification, heavy metals, nuclear reactors (and their waste products), ozone, greenhouse gases and climate change.

He was on the Research and Development Advisory Panel of Atomic Energy of Canada and conducted studies on nuclear waste management in Sweden and France.

Hare considered that the most pressing environmental challenge facing Canada is climate change caused by excessive use of fossil fuels.

[5] In 1987, he was presented with the Sir John William Dawson Medal, for important contributions of knowledge in multiple domains, from the Royal Society of Canada in which he was a Fellow.