Portal:History of science/Selected anniversaries/July 15
- 1865 - Birth of Wilhelm Wirtinger, Austrian mathematician (d. 1945)
- 1918 - Birth of Bertram N. Brockhouse, Canadian physicist, Nobel Prize laureate (d. 2003)
- 1919 - Death of Hermann Emil Fischer, German chemist, Nobel Prize laureate (b. 1852)
- 1921 - Birth of Robert Bruce Merrifield, American chemist, Nobel Prize laureate
- 1922 - Birth of Leon M. Lederman, American physicist, Nobel Prize laureate
- 1928 - Birth of Carl Woese, American microbiologist
- 1930 - Birth of Stephen Smale, American mathematician
- 1943 - Birth of Jocelyn Bell Burnell, Irish astrophysicist
- 1955 - Eighteen Nobel laureates sign the Mainau Declaration against nuclear weapons, later co-signed by thirty-four others