The present paper deals with a taxonomic study of the symbiotic flagellates from some wood-inhabiting termites of the families Kalotermitidae and Rhinotermitidae from different parts of India. Altogether 48 species of flagellates recovered from 9 species of termite hosts are dealt with in the present work in detail. Apart from this, keys to these flagellate species based on their morphological features have been incorporated for easy identification. Furthermore, a systematic list of these flagellates, bibliography, illustrations, tables etc. are included.