K
- Poul-Henning Kamp - MD5 password hash algorithm, FreeBSD GEOM and GBDE, part of the UFS2, FreeBSD Jails, malloc and the Beerware license
- Mitch Kapor - Lotus 1-2-3, founded Lotus Development Corporation
- Phil Katz - creator of ZIP file format, author of PKZIP
- Alan Kay - Smalltalk, Dynabook, Object-oriented programming, Squeak
- Mel Kaye - a real programmer
- John Kemeny - co-creator of BASIC
- Stan Kelly-Bootle - Manchester Mark 1, The Devil's DP Dictionary
- Brian Kernighan - co-creator of AWK (the K in the name stands for Kernighan), author of ditroff text-formatting tool
- Gary Kildall - CP/M
- Tom Knight - Incompatible Timesharing System
- Jim Knopf - aka Jim Button, author PC-File flatfile database; considered a co-creator of shareware
- Donald E. Knuth - TeX, CWEB, Metafont, The Art of Computer Programming, Concrete Mathematics
- Andrew R. Koenig - (co-)author of books on C and C++ and former Project Editor of the ISO/ANSI standards committee for C++
Read more about this topic: List Of Programmers