Josef Emil Krejcik (22 January 1885, Vienna - 4 January 1957) was an Austrian chess master, problemist, journalist and author.
Born in Vienna, he participated in many local tournaments before, during and after World War I.
Josef Krejcik published in Vienna's leading chess magazine, the Wiener Schachzeitung, and ran a chess column in the Neues Wiener Tagblatt.
He was an author of famous chess books: 13 Kinder Caissens (Vienna 1924), Artige und unartige Kinder der Schachmuse (Leipzig, 1925), and Mein Abschied vom Schach (Berlin, 1955).
He was known for his humorous witty remarks.
His name is attached to the Krejcik Gambit in the Dutch Defence (1.