OM is the symbol of GOD, the creator of all universe. This Sacred symbol can be depicted in writing in different ways. % is a shorthand representation of the sacred, beautiful and unique one lettered symbol to represent the most glorious name of th SUPREME BEING. In this small book, an attempt has been made to describe briefly, various aspects of OM. These inter-alia include its meanings, the origin, its common usage and description in various Holy Scriptures and its linkage with other faiths etc. Some methods of meditation and OM JAPA are also stated. In part Il of this book, famous OM mantras, with their meaning, have _also been mentioned. Several OM songs have also bee included for the benefit of the general reader.