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Pierre Paul David, CC, OQ, cardiologist and senator (born 25 December 1919 in Montréal, QC; died 5 April 1999 in Montréal).

Evelyn Merle Roden Nelson, mathematician, professor (born 25 November 1943 in Hamilton, ON; died 1 August 1987 in Hamilton, ON). A brilliant mathematical mind, Evelyn Nelson fought gender barriers in a discipline long dominated by men to become a rising star in the field both in Canada and abroad. She contributed to the fields of universal algebra, equational compactness and formal language theory. Nelson was particularly interested in applying universal algebra to the then-burgeoning field of computer science. She was a devoted teacher, sought-after research partner and the author of over 40 publications during what was a tragically short career.

Rose Mamelak Johnstone, FRSC, biochemist (born 14 May 1928 in Lodz, Poland; died 3 July 2009 in Montreal, QC). Rose Johnstone is best known for her discovery of exosomes, a key development in the field of cell biology. These tiniest of structures originating in all cells of the human body are vehicles that transport proteins, lipids and RNA from one cell to another. A pioneer of women in science, Johnstone was the first woman to hold the Gilman Cheney Chair in Biochemistry and the first and only woman chair of the Department of Biochemistry in McGill University’s Faculty of Medicine.

John Arthur Porter, sociologist (born 12 November 1921 in Vancouver, BC; died 15 June 1979 in at Ottawa, ON). Regarded by many as Canada's leading English-language sociologist, Porter is best known for his monumental work, The Vertical Mosaic, published 1965.

Sir George Strong Nares, naval officer, Arctic explorer (born 1831 at Clytha, Wales; died 15 January 1915 at Kingston upon Thames, England).

Peter Henderson Bryce, physician, public health official (born 17 August 1853 in Mount Pleasant, Canada West; died 15 January 1932 at sea). Dr. Peter Henderson Bryce was a pioneer of public health and sanitation policy in Canada. He is most remembered for his efforts to improve the health and living conditions of Indigenous people. His Report on the Indian Schools of Manitoba and the Northwest Territories exposed the unsanitary conditions of residential schools in the Prairie provinces. It also prompted national calls for residential school reform.

Judie Barbara Alimonti, immunologist (born 13 March 1960 in Kelowna, BC; died 26 December 2017 in Ottawa, ON). Alimonti made a significant contribution to one of Canada’s greatest achievements in medical science and public health, the development of the Ebola vaccine. (See also Medical Research.) From 2010 to 2015, Alimonti managed the Ebola vaccine during a time when research was underfunded. Alimonti received little recognition for her work during her lifetime, and her colleagues have called her the unsung hero of the Ebola vaccine story.

David Ernest Hornell, VC, clerk, pilot (born 26 January 1910 in Toronto, Ontario; died 25 June 1944 at sea near the Faroe Islands in the North Atlantic Ocean). During the Second World War, Hornell was awarded a posthumous Victoria Cross (VC) for his heroic actions in sinking a German submarine and encouraging his crewmates after their plane was shot down. He was the first member of the Royal Canadian Air Force (RCAF) to receive the VC.

Veena Rawat, OC, electrical engineer, civil servant, telecommunications pioneer (born in 1945 in India). Veena Rawat spent nearly 40 years in public service, serving in leadership positions in management and policy development with Industry Canada. A trailblazer in the telecommunications sector, Rawat was the first female to complete a doctorate in electrical engineering at Queen’s University and was the first female president of Industry Canada’s Communication Research Centre. Rawat has been a leading voice in the creation of global regulatory structures for radio spectrum management, championing efforts to make broadband service affordable to all and bring it to remote and rural regions. She is an advocate for gender equality in STEM sectors and increasing women’s presence in engineering fields.

Donna Theo Strickland, CC, physicist (born 27 May 1959 in Guelph, ON). Donna Strickland is a pioneering physicist, known for her work on ultrafast lasers. She is currently a professor of physics at the University of Waterloo. She has authored more than 90 publications and has made seminal contributions to the field of laser technology. In 2018, Strickland was jointly awarded the Nobel Prize in Physics for her work on the development of laser technology.

Emily Howard Jennings Stowe, physician, teacher, school principal, suffragist (born 1 May 1831 in Norwich, Ontario; died 30 April 1903 in Toronto, Ontario). Stowe was a founder of the Canadian Women’s Suffrage Association. She is considered to be the first female physician to publicly practise medicine in Ontario. She was also the first female principal of a public school in Ontario. 

Allan Selwyn Bundy, pilot (born 1920 in Dartmouth, NS; died 9 December 2001 in Toronto, ON). He was one of two known Black Canadian combat pilots during the Second World War. Bundy served in the Royal Canadian Air Force (RCAF) and, according to the operations record book of 404 Squadron, flew 28 combat missions.

Alexander Graham Bell, teacher of the deaf, inventor, scientist (born 3 March 1847 in Edinburgh, Scotland; died 2 August 1922 near Baddeck, NS). Alexander Graham Bell is generally considered second only to Thomas Alva Edison among 19th- and 20th-century inventors. Although he is best known as the inventor of the first practical telephone, he also did innovative work in other fields, including aeronautics, hydrofoils and wireless communication (the “photophone”). Moreover, Bell himself considered his work with the deaf to be his most important contribution. Born in Scotland, he emigrated to Canada in 1870 with his parents. Bell married American Mabel Hubbard in 1877 and became a naturalized American citizen in 1882. From the mid-1880s, he and his family spent their summers near Baddeck on Cape Breton Island, where they built a large home, Beinn Bhreagh. From then on, Bell divided his time and his research between the United States and Canada. He died and was buried at Baddeck in 1922.

Irene Ayako Uchida, OC, geneticist (born 8 April 1917 in Vancouver, BC; died 30 July 2013 in Toronto, ON). Dr. Uchida pioneered the field of cytogenetics in Canada, enabling early screening for chromosomal abnormalities (i.e., changes in chromosomes caused by genetic mutations). She discovered that women who receive X-rays during pregnancy have a higher chance of giving birth to a baby with Down syndrome and other chromosomal abnormalities. She also discovered that the extra chromosome that causes Down syndrome may come from either parent, not only the mother.

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​Thomas-Louis Tremblay, soldier, commander and civil engineer (born 16 May 1886 in Chicoutimi, Québec; died 28 March 1951 in Québec City, Québec).

Ursula Martius Franklin, CC, OOnt, FRSC, physicist, educator, feminist and social activist (born 16 September 1921 in Munich, Germany; died 22 July 2016 in Toronto, Ontario). A specialist in the structure of metals and alloys, she pioneered the development of archaeometry, which applies modern techniques of materials analysis to archaeology. After working as a senior research scientist for the Ontario Research Foundation (1952–67), she joined the University of Toronto’s Department of Metallurgy and Materials Science (now the Department of Materials Science and Engineering) in 1967. She won many awards for her innovative scientific and humanitarian work, including the Pearson Peace Medal (2002).

Beatrice (Trixie) Helen Worsley, computer scientist, professor (born 18 October 1921 in Queretaro, Mexico; died 8 May 1972 in Waterloo, Ontario). Worsley was a pioneering researcher in the emerging field of computer science. She conducted research and taught at the University of Toronto and Queen’s University in Kingston, Ontario. Worsley is considered to be the first female computer scientist in Canada and was honoured with a lifetime achievement award from the Canadian Association of Computer Science in 2014.

Amelia Yeomans (née LeSueur), physician, social and political reformer, temperance advocate, suffragist and public speaker (born 29 March 1842 in Québec City, Canada East; died 22 April 1913 in Calgary, AB).