Islamic tradition and culture includes a number of stories and legends that are mythological but do not derive from sacred texts.
For example, note stories of genies, magic lamps, flying carpets, and wishes. Also Tales of Arabian Nights, Alladin, etc.
Many Islamic grandmothers have told their grandchildren bedtime stories about a snake which will appear when they have died and are buried in their grave.
The concept of the Evil Eye may or may not be be regarded Islamic mythology, since it can not be found in Islamic sacred writings, and yet has been and is being held to be true by millions of muslims. It is a part of the so-called Folk Islam, a set of superstitions and practices transmitted orally from generation to generation. Many elements of Folk Islam stem from animism practices and have been integrated into the daily life of many muslims. (this may have to go to a separate page. Much more could be written about it)