East Ogan Komering Ulu Regency (Kabupaten Ogan Komering Ulu Timur) is a regency of South Sumatra Province, Indonesia. It was created on 18 December 2003 from what had formerly been the eastern districts of Ogan Komering Ulu Regency. It covers an area of 3,370 km² and had a population of 609,982 at the 2010 Census^[2] and 649,853 at the 2020 Census;^[3] the official estimate as at mid 2022 was 673,966.^[1] The regency seat is the town of Martapura.^[4] It borders Ogan Ilir Regency to the north, Ogan Komering Ulu Regency to the west, Ogan Komering Ilir Regency in the east and Lampung Province and South Ogan Komering Ulu Regency in the south.^[4]

This Regency is administratively composed of twenty districts (kecamatan), comprising 191 villages.^[4] Their areas (in km²) and their populations at the 2010^[2] and 2020^[3] Censuses are listed below, together with the official estimates as at mid 2022.^[1] The table also includes the locations of the district administrative centres, the number of administrative villages in each district (totaling 305 rural desa and 7 urban kelurahan - the latter all in Martapura District), and its post code.

Note: (a) comprising 7 kelurahan and 9 desa.

The regency is one of the major rice producing areas of South Sumatra, mainly concentrated in the Belitang District, Buay Madang District, Cempaka District and Martapura Districts with a large-scale irrigation scheme covering some 120,000 hectares.^[5] Other crops include rubber, coffee, black pepper, coconut, palm oil and fruits such as orange, durian, duku, rambutan and banana.

Former Constitutional Court judge Ahmad Natabaya was born in the regency in the village of Cempaka.^[6]