Sadiya is a female name of Arabic origin, meaning "Lucky." The name comes from the town of Sadiya in the Tinsukia district of Assam, India, which was once the capital of the Chutia Kingdom. Historically, Sadiya was an important region in the Chutiya kingdom, with extensive remains of buildings and fortifications from that era. The region was a center of development for the eastern Assamese dialects, and it served as a trade route to Tibet. Over the centuries, Sadiya witnessed various conquests and changes in governance, including being under the Ahom kingdom and later the British Raj. The town is now a part of the Lakhimpur district and holds historical significance, with architectural ruins like the Tamreswari Temple, Bura-Buri Than, Bhismaknagar Fort, and Rukmini Nagar. Sadiya is also known for its geographical features, including being the only area in Assam where a specific subspecies of hoolock gibbon is found.