This Surah is named AL-FATIHAH because of its subject-matter. Fatihah is that which opens a subject or a book or any other thing. In other words, Al-Fatihah is a sort of preface. It is one of the very earliest Revelations to the Holy Prophet (saw). As a matter of fact, we learn from authentic Traditions that it was the first complete Surah which was revealed to Muhammed (Allah’s peace be upon him).