Quensel is a surname. Notable people with the surname include:
Annie Quensel (1886 – 1933), Austrian and Swedish zoologist and writer Carl-Erik Quensel (1907–1977), Swedish statistician and demographer Conrad Quensel (1767-1806), Swedish naturalist Isa Quensel (1905-1981), Swedish actress and opera singer Nils Quensel (1894–1971), Swedish cabinet minister involved in the "Kejne affair" Percy D. Quensel (1881–1966), Swedish geologist
See also Quensel Glacier, Cooper Bay, South Georgia Quesnel (disambiguation)