Václav Cafourek (4 April 1911 in Prague, Austria-Hungary – 6 November 1976 in Prague, Czechoslovakia), commonly known under his pen name of Václav Ctvrtek was a Czech poet and author.
His most famous works include Kremílek and Vochomurka, Rumcajs, Manka and Cipísek, and Víla Amálka.
He primarily wrote fairy tales for children, and some of his works have been adapted on the Czech children's television program Vecernícek.
On 4 April 2011 Google celebrated his 100th birthday by replacing the original Google logo with a doodle celebrating his works for a day on Google Czech Republic.