| William Karush | |
| Birth Date: | 1 March 1917 |
| Birth Place: | Chicago, IL |
| Nationality: | American |
| Fields: | Mathematics |
| Workplaces: | California State University at Northridge |
| Alma Mater: | University of Chicago |
| Doctoral Advisors: | )--> |
| Known For: | Contribution to Karush–Kuhn–Tucker conditions |
William Karush (1 March 1917 – 22 February 1997) was an American professor of mathematics at California State University at Northridge and was a mathematician best known for his contribution to Karush–Kuhn–Tucker conditions. In his master's thesis he was the first to publish these necessary conditions for the inequality-constrained problem,[1] although he became renowned after a seminal conference paper by Harold W. Kuhn and Albert W. Tucker.[2] He also worked as a physicist for the Manhattan Project, although he signed the Szilárd petition and became a peace activist afterwards.[3]