This paper is an attempt to present the morphological processes that have been observed in Sanzari Boro, an eastern variety of the Boro language. Boro belongs to the Tibeto-Burman language family. The Standard variety of Boro is mainly spoken in the present Bodoland Territorial Region (BTR) of Assam, India but Sanzari Boro speakers primarily reside outside and eastern part of the BTR. For this research data have been collected from native Sanzari Boro speakers of the Nagaon district of Assam. After examining the data, it has been noticed that affixation, mainly suffixation and prefixation, plays important role in the morphological processes in Sanzari Boro. The major morphological processes that have been observed in the language variety are inflection, derivation, compounding, and reduplication.