Tamang (Devnagari: तामाङ; tāmāng) is a term used to collectively refer to a dialect cluster spoken in parts of Nepal and Sikkim. It comprises Eastern Tamang, Northwestern Tamang, Southwestern Tamang, Eastern Gorkha Tamang, and Western Tamang. Lexical similarity between Eastern Tamang (which is regarded as the most prominent) and other Tamang languages varies between 81% to 63%; lexical similarity between Spanish and Portuguese, for instance, is estimated at 89%.
The Tamang language has further been subdivided into the following dialects-
Eastern Tamang: 759,257 in Nepal (2000 WCD). Population total all countries: 773,257;