The girl, who still does not know she is married, lives with her parents in the town of Unayzah, 135 miles north of the capital Riyadh. The marriage had been arranged in secret by her father.
She is preparing to start the new year at primary school in the town, which is located in the conservative Najd region of the country - the spiritual homeland of the Islamist Wahhabi movement that has long dominated the kingdom.
According to the Arabic-language newspaper Al-Watan, which reported the case, the divorce suit has been filed by the girl's mother.
Her relatives have contacted human rights groups in the kingdom to try to arrange legal help to annul the marriage.
However, the husband has refused, saying he has done nothing wrong.
From : Telegraph.co.uk