Egon Zakrajšek (July 7, 1941 – September 2002) was a Slovene mathematician and computer scientist.
He received his Master's degree from the University of Zagreb for his work Numerična realizacija Ritzovega procesa (Numerical realization of the Ritz process) and his doctorate in 1978 in Ljubljana with his dissertation O invariantni vložitvi pri reševanju diferencialnih enačb (About the invariable embedding in solving of differential equations).
In 1982 he set off for the United States and he became the manager of programming equipment at the Cromemco company.
With his advocacy for the C language and open operating systems, that is, Unix and Linux, he helped to modernize the lessons of computer science.
Beside his computer science skills he was also an excellent mathematician with a broad profile.