Islamic calligraphy (calligraphy in Arabic is Khatt ul-Yad) is an aspect of Islamic art that has evolved alongside the religion of Islam and the Arabic language.
Arabic calligraphy is associated with geometric Islamic art (arabesque) on the walls and ceilings of mosques as well as on the page. Contemporary artists in the Islamic world draw on the heritage of calligraphy to use calligraphic inscriptions or abstractions in their work.
Instead of recalling something related to the reality of the spoken word, calligraphy for Muslims is a visible expression of the highest art of all, the art of the spiritual world. Calligraphy has arguably become the most venerated form of Islamic art because it provides a link between the languages of the Muslims with the religion of Islam. The holy book of Islam, al-Qur'an, has played an important role in the development and evolution of the Arabic language, and by extension, calligraphy in the Arabic alphabet. Proverbs and complete passages from the Qur'an are still active sources for Islamic calligraphy.
There was a strong parallel tradition to that of the Islamic, among Aramaic and Hebrew scholars, seen in such works as the Hebrew illuminated bibles of the 9th and 10th centuries.