Scientists
- Sid Altman - Molecular Biology
- Frederick Banting, (1891-1941), medical scientist, co-discovered insulin
- Charles Best, (1899-1978), medical scientist, co-discovered insulin
- Wilfred Bigelow - first artificial pacemaker
- Bertram Brockhouse - designed the Triple-Axis Neutron Spectroscope
- William Francis Giauque - 1949 Nobel Prize Winner in Chemistry
- James Gosling - Programmer, inventor of Java
- Gerhard Herzberg - 1971 Nobel Prize winner in Chemistry for Molecular Spectroscopy
- David Hubel - 1981 Novel Prize winner in Medicine for mapping the visual cortex
- Doreen Kimura - Behavioural Psychologist: World expert on sex differences in the brain
- Julia Levy - Microbiologist: co-discovered photodynamic anti-cancer drugs
- William Logan, (1798-1875), founded the Geological Survey of Canada, knighted by Queen Victoria, awarded the French Legion of Honor.
- Rudolph Marcus - 1992 Nobel Prize in Chemistry for electron transfer reactions (e.g. rust)
- Henry Morgentaler - abortionist
- Sir William Osler - Physician, "most influential physician in history"
- Wilder Penfield - Neurosurgeon, discovered electrical stimulation of the brain
- John Polanyi - 1986 winner of the Nobel Prize in Chemistry for Chemi-luminescence
- Charles Edward Saunders - Marquis Wheat
- Arthur Schawlow - 1981 Nobel Prize winner in Physics (for lasers)
- Myron Scholes - 1997 Nobel Prize winner in Economics
- Hans Selye - (1907-1982) - pioneering stress researcher
- Michael Smith (1932-2000), 1993 Nobel Prize winner in Chemistry for site-based mutagenesis
- David Suzuki, (born 1936), geneticist and science popularizer
- Henry Taube - 1983 Nobel Prize in Chemistry for electron transfer reactions
- Richard Taylor - 1990 Nobel Prize in Physics for verifying the Quark Theory
- Irene Ayako Uchida - Cytogenticist: World-famous Down syndrome researcher
- William Vickrey - 1996 Nobel Prize winner in economics
- Tuzo Wilson - Geophysicist. plate tectonics
For a more detailed list of renowned Canadian scientists, including Nobel Prize winners, see the outside link: