This book exist to explain religious moderation, and to answer the question, what is meant by religious moderation? Why is religious moderation important inthe context of religious life in Indonesia in particular? And what is the possible approach or strategy in implementing religious moderation, so that religious communities become moderate? Briefly, it can be explained here that the term moderate is an adjective, derived from the word moderation, which means not radical or excessively right- or left-wing. In Indonesian, it is then absorbed becoming the word moderasi, which is defined in the official Indonesian Dictionary (KBBI) as reducing violence, or avoiding extremism.