The Tantraloka of Abhinavagupta is perhaps the first, the largest and in a very real senses the most profound traditional undertaking (known to the present day student) that puts the entire tantric lore, literature, thought and praxis in a well-knit coherent pattern at one place. This text has rightly acquired eminence unmatched by any other treatise in the field of tantric source texts. This Word-Index is intended to meet a long-felt need of the world scholarship at large intent on coming to terms with the complex architecture of the Tantraloka through its intricate enormity. The present exercise should be seen as culmination of the author's efforts towards the structural study providing a basic support system for the more serious researchers in the field. The present work may, therefore, serve as a supplement. to the author's Introduction to the Tantraloka: A Study in Structure. The present work; in addition, may also act as a comprehensive subject - index of the Tantraloka affording thereby an indispensable tool for in-depth studies in the related areas. About the Author Navjivan Rastogi, besides being a pupil in the direct lineage of K.C. Pandey, is privileged to have been a colleague of his master and mentor for six years with whom he (jointly) edited an anonymous sub commentary on Abhinavagupta's lsvara-pratyabhijna-vimarsini (unpublished). Formerly Honorary Director of the Abhinavagupta Institute of Aesthetics and Saiva Philosophy, founded by his teacher K.C. Pandey, he retired from active service as the chairperson of the Department of Sanskrit, Pali, and Prakrta languages, University of Lucknow. Navjivan Rastogi came to prominence with the publication of his Krama Tantricism of Kashmir, vol. I. His other major works for which he is known are: An Introduction to the Tantraloka: A Study in Structure and Kasmira Sivadvayavdda ki Mula Avadharanayen (