Jan Wielemaker (1960, Koudekerke[1]) is a Dutch computer scientist. He initiated the SWI-Prolog implementation of the Prolog programming language in 1987 while employed at the University of Amsterdam, and he continued its development after moving to the Vrije Universiteit Amsterdam.[2] Since 2017, he has been associated with the Centrum Wiskunde & Informatica.[3] In 2020, he became the Director of SWI-Prolog Solutions b.v. [4]
He is known for being the original author and one of the most extensive contributors to the SWI-Prolog,[5] as well as the SWI-Prolog reference manual.