This thesis presents a phonetic study of Sindhi, a language belonging to the Indd-Arynn family of languages. As far as I can discover, it is for the first time that a detailed synchronic study of Sindhi supported by quantitative date has been attempted on such comprehensive lines with modern linimistic instrwneritai techniques. Phonetic observations have been made, based on the author's own kinaesthetic proprioception and introspective perception. A large number of instruments have been used to examine and verify the native speaker: proprioceptive impressions and perception. The discussion thus draws heavily on both the author's own kinasathetic sensations and on the instrumental data obtained from examining airflow and pitch meter records. Chapter one gives background information shout the Sindhi language and its speakers, the script and the dialects. The chapter ends with a discussion on the place of instrumental techniques in phonetic research. Chapters two and three present a detailed description of consonent and vowel sounds of Sindhi. The relevant allophonic and distributional characteristics of each sound are discussed with illustrative examples. Help has been sought from the sound spectrograph to check on whether there is any correlation between the traditional articulatory description of the vowels of Sindhi and their acoustic specifications in terms of foment frequencies, and also to consider whether the vowel continuum can be better described in terms of their acoustic specifications. Chapter four determines syllable structure in Sindhi. The last chapter is a preliminary study and the first attempt at providing a systematic description of intonation patterns in Sindhi. An attempt also is made to relate acoustic characteristics to intonation described in linguistic terms.