Václav Cafourek (4 April 1911, in Prague, Austria-Hungary – 6 November 1976, in Prague, Czechoslovakia), commonly known under his pen name of Václav Čtvrtek was a Czech poet and author. His most famous works include and , 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 Večerníček. 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.