Konrad Prószyński (19 February 1851 – 8 July 1908),[1] pen name Kazimierz Promyk, was a Polish writer and editor from the Russian Empire.

[1] Due to broad popularity of his first educational poster, towards the end of 1875 Prószyński wrote the first of his three most important works: Primer, Where You Learn to Read in 5 or 8 Weeks (Elementarz, na którym nauczysz czytać w 5 albo 8 tygodni, 1875);[2] printed in more than a million copies in the next 33 years.

[3] Also in 1875, he wrote O księdzu Stanisławie Staszycu (On Father Stanisław Staszic) whose experience inspired him; as well as his next educational volume: "Pierwsza książeczka dla wprawy w czytaniu" (First Book for Practice in Reading, 1875).

[1] On top of that, on May 1, 1875 along with two friends and co-conspirators, Prószyński signed a founding act of the highly secretive Towarzystwo Oświaty Narodowej (Society for National Education).

In 1878 he formally registered his own publishing company called Konrad Prószyński National Bookstore (Księgarnia Krajowa Konrada Prószyńskiego).

[1] Prószyński wrote and self-published the next versions of his primer, as well as new textbooks for self-education and self-directed learning, including The Pictorial Book for Reading and Writing (Obrazowa nauka czytania i pisania, 1879).