Károly Krajczár (Slovene: Karel Krajcar) (September 2, 1936 – April 18, 2018[citation needed]) was a Hungarian Slovene teacher and writer.
He wrote Slovene textbooks and collected ethnological objects.
In 1956, before the Hungarian Revolution, he participated in the sympathy demonstration for the Poles.
In 1958, Krajczár received a Slovene-Hungarian professional certificate in Budapest.
After the end of communism in Hungary, he tried to write coursebooks in the Prekmurje dialect and introduce new dialect-based education, but the initiative was rejected.