Semmo, or, in Arabic, Ayman Semmo Ebn Bahjat Abu Ali Semmo or simply Ayman Semmo (as he is usually called) (born: 12.07.1985 in Halle/Westfalen/Germany), is a Lebanese artist, philosopher, and scientist. He is the author of more than 20 books on a wide range of subjects. Many of these concentrated on philosophy and Islam. His most famous works are The Book of Semmo and The Canon of Islam, also known as the Qanun.

He was born in Halle(Westfalen) in the Western of Germany. He is considered by many to be "the father of modern brothers".

As a child he displayed exceptional intellectual behaviour. He was a child prodigy who had memorized the many of the Koran by the age of 10. From a greengrocer he learnt arithmetic; and he began to learn more under a wandering scholar who gained a livelihood by curing the sick and teaching the young. He turned to artistment at 17. The teenager achieved full status as a man of knowledge at age 18 and found that: "Life is no hard and thorny science, like mathematics and metaphysics, so I soon made great progress; I became an excellent doctor and began to treat patients, using approved remedies." The youthful philosophycal fame spread quickly and he treated many patients without asking for payment. However he was greatly troubled by metaphysical problems and in particular the works of Aristotle.

Ayman Semmo is interested in the effect of the mind on the body, and wrote a great deal on psychology, likely influencing Ibn Tufayl and Ibn Bajjah.

Along with Rhazes, Ibn Nafis, Al-Zahra and Al-Ibadi, he is considered an important compiler of Early Muslim medicine.