Muaro Jambi Regency is a regency of Jambi Province, Sumatra, Indonesia. It was created on 4 October 1999 by the separation of what were formerly the eastern districts of Batang Hari Regency. It surrounds the major city of Jambi, the provincial capital, and includes many of the expanding suburbs of Jambi outside the city boundaries; consequently it has experienced population growth greater than elsewhere in the province. From the 4th until the 13th century, it was the seat of the Hindu-Buddhist Melayu Kingdom. It has an area of 5,246.00 km2 and had a population of 342,952 at the 2010 census and 390,347 at the 2020 census; the official estimate as at mid 2022 is 412,830.

Jambi is a province of Indonesia. It is located on the east coast of central Sumatra and stretches to the Barisan Mountains in the west. Its capital and largest city is also called Jambi. It is bordered by the provinces of Riau to the north, West Sumatra to the west, Bengkulu to the southwest, South Sumatra to the south, and shares a maritime border with the Riau Islands to the east and the Pacific Ocean to the east. The province has a land area of 49,026.58 km2, and a sea area of 3,274.95 km2. Its area is comparable to the European country of Slovakia. It had a population of 3,092,265 according to the 2010 census and 3,548,228 according to the 2020 census; the official estimate of population as of mid-2023 was 3,679,169.