Due to its most poetic and charming presentation of the sublime doctrines of the Vedanta the Kathopanishad has ever been a great object of interest to scholars both of the East and West from a long time past. This book includes original verses constructed text (anvaya) with a literal word by word translation English rendering of each stanza copious notes and introductory note. This Upanishad forms part of the Kata Shaaka (branch) of Krishna Yajur Veda. Hence it is called as the Kato-Upanishad. The subject dealt in this Upanishad viz. the Nachiketa Upaagyaana also finds place in the Taittriya Braahmana.