Sindhi language is primarily spoken in the Sindh province of Pakistan, and in some parts of India. Languages phonemic inventory include vowels, consonants and diphthongs. This paper presents acoustic analysis and properties of the glide consonants of Sindhi. Glides are considered having stable and predictable formant structure and associated acoustic properties like vowels and diphthongs. Understanding the corresponding acoustic similarities, differences and relationship between three types of these sounds is the subject of discussion of this paper.