Kaleph Jõulu (15 November 1927 – 22 January 2014) was an Estonian educator, writer and folklore collector. He was best known for his book "Maailma 33333 rahvatarkust" (2013). He won the Rahvaluule kogumispreemia (Folklore Prize) four times (1994, 1996, 1997, 2007). He was born in Rapla, Rapla County.