|Died||April 6, 2021 (aged 100)|
|Alma mater||McGill University|
|Known for||Molecular biology, genetics|
|Awards||Order of Canada|
Order of Ontario
Flavelle Medal (1978)
|Institutions||Ontario Cancer Institute|
Hospital for Sick Children Research Institute
Samuel Lunenfeld Institute at Mount Sinai Hospital
University of Toronto
|Notable students||Joyce Taylor-Papadimitriou|
Louis Siminovitch, CC OOnt FRSC FRS (May 15, 1920 – April 6, 2021) was a Canadian molecular biologist. He was a known figure in human genetics, researcher into the genetic basis of muscular dystrophy and cystic fibrosis, and helped create Ontario programs about roots of cancer.
Siminovitch was born in Montreal, Quebec. He studied at Pasteur Institute in Paris and at McGill University. He joined the University of Toronto and worked there from 1956 to 1985. In 2012, he was made a member of the Order of Ontario. Siminovitch died on April 6, 2021 in Toronto, aged 100.