Raijmondus "Raymond" Godefriedus Norbert van de Klundert, known commonly as Kluun or Ray Kluun, is a Dutch author born on April 17, 1964. He is well-known for his novel Love Life (Dutch: Komt een vrouw bij de dokter), in which he documents a fictionalized version of his own life story; a husband committing adultery while his wife is dying of cancer.

After Kluun's wife died of cancer, he began to write down his experiences in his first book Komt een vrouw bij de dokter ("A woman visited her doctor"), which wasn't well received by the critics, but sold 500,000 copies in the Netherlands. He also wrote a sequel called The Widow. The Widow was followed up by a book called Help, I Impregnated My Wife, which deals with the experiences of a man during the pregnancy of his wife. He wrote two other books after that, one of which was given away for free with a purchase.