Z. W. Birnbaum | |
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| Born | Zygmunt Wilhelm Birnbaum October 18, 1903 |
| Died | December 15, 2000 (aged 97) Seattle, Washington, United States |
| Other names | Bill Birnbaum |
| Citizenship | American |
| Alma mater | University of Lwów University of Göttingen |
| Known for | Birnbaum-Marshall inequality Birnbaum–Orlicz space Birnbaum–Saunders distribution nonparametric tests |
| Awards | Guggenheim Fellowship Wilks Memorial Award |
| Scientific career | |
| Fields | Statistics, Mathematics |
| Institutions | University of Washington, Seattle |
| Doctoral advisor | Hugo Steinhaus |
| Other academic advisors | Edmund Landau Felix Bernstein |
Zygmunt Wilhelm "Z. W." Birnbaum (18 October 1903 – 15 December 2000), often known as Bill Birnbaum, was a Polish-American mathematician and statistician who contributed to functional analysis, nonparametric testing and estimation, probability inequalities, survival distributions, competing risks, and reliability theory.