Adnan is the traditional ancestor of the northern (or "musta`ribah") Arabs, said to be a descendant of Ishmael through his son Kedar. His descendants are said to have included the Prophet Muhammad. Adnan is still a common male name for Arabs and Muslims. Famous people named Adnan today include Adnan Pachachi, Adnan Badran and Adnan Terzic.

GEN 17:20 And as for Ishmael, I have heard thee: Behold, I have blessed him, and will make him fruitful, and will multiply him exceedingly; twelve princes shall he beget, and I will make him a great nation.