In order to maintain social harmony in an increasingly multi-cultural society and to remove the barriers of prejudices which prevail today, it is essential to be aware of the variations of culture of the people living in that society. One of the ways of studying the life style of a community is to look at its festivals. Islamic festivals are not merely colourful and festive social occasions; in fact they also represent the living aspects of the Faith. This booklet explains the nature of not only those Islamic festivals which are universally celebrated such as Friday and Eids, but also some other Muslim festivals which are in vogue in the Muslim society today.