East Seram Regency () is a regency of Maluku (province), in Indonesia. It is mainly located on the island of Seram, but also includes smaller islands to the southeast comprising the Gorom and Watubela archipelagoes. Its only land boundary is with Central Maluku Regency which includes the central portion of Seram island.
The regency covers a land area of 5,779.12 km2, and had a population of 99,065 at the 2010 CensusBiro Pusat Statistik, Jakarta, 2011. and 137,972 at the 2020 Census;Badan Pusat Statistik, Jakarta, 2021. the official estimate as at mid 2025 was 142,234 (comprising 71,788 males and 70,446 females).Badan Pusat Statistik, Jakarta, 27 February 2026, Kabupaten Seram Bagian Timur Dalam Angka 2026 (Katalog-BPS 1102001.8107) The principal town lies at Bula, on Seram Island.
Administrative divisions At the time of the 2010 Census the regency was divided into six districts (kecamatan), an increase from the original four. The first four of these six districts were on the island of Seram; the other two covered the Gorom and Watubela archipelagoes, two groups of smaller islands situated to the southeast of Seram.
Subsequently, six additional districts were created in 2012 by the division of the original six districts, and a further three districts were created in 2014, so that the regency was divided into fifteen districts (kecamatan), then a sixteenth district (Ukar Sengan) was formed in 2025. Eleven of these are on the island of Seram (including small offshore islands) and five on the more substantive islands to its southeast. These are tabulated below with their present areas and their populations at the 2010 and 2020 Censuses, together with the official estimates as at mid 2025.Badan Pusat Statistik, Jakarta, 27 February 2026, Kabupaten Seram Bagian Timur Dalam Angka 2026 (Katalog-BPS 1102001.8107) The table also includes the locations of the district administrative centres, the number of administrative villages (all classed as rural desa) in each district, and its post code.
Kode Wilayah Name ofDistrict(kecamatan) Area in km2 Pop'nCensus2010 Pop'nCensus2020 Pop'nEstimatemid 2025AdmincentreNo. ofVillagesPostCode 81.05.01 Bula 658.8024,03726,02327,686Bula1097521 81.05.12 Bula Barat (West Bula) 802.69(a)8,2818,721Waiketam Baru1397522 81.05.15 Teluk Waru (Waru Bay)673.23(a)5,2795,941Waru1197524 81.05.03 Werinama 1,232.709,7526,1655,868Werinama1097525 81.05.07 Siwalalat 641.34(b)6,5856,912Atiahu1297523 81.05.06 Tutuk Tolu 314.404,7227,1667,180Air Kasar1197594 81.05.02 Seram Timur (c) (East Seram)16.6124,01812,1817,533Geser697592 81.05.08 Kilmury807.91(c)6,5186,812Kilmury1497591 81.05.13 Kian Darat 135.22(c)6,2976,567Watu-Watu1097590 81.05.14 Siritaun Wida Timur (Lian Vitu) 206.78(c)6,6897,223Keta Rumadan1097598 81.05.16 Ukar Sengan 42.33(f)(f)4,874Urung1097592 Sub-totals on Seram Island 5,532.0062,52991,18495,321 117 81.05.04 Pulau Gorom (Gorom Island) 94.01 25,24922,15621,973Kataloka2497593 81.05.11 Gorom Timur (East Gorom) 22.43(d)9,4209,663Miran2397596 81.05.09 Pulau Panjang (Panjang Island) 19.9991,9132,6912,706Pulau Panjang697599 81.05.05 Kesui Watubela (e) 35.049,2519,3219,271Tamher Timur1897595 81.05.10 Teor (Teor Island) 22.042,5563,2003,300Wermaf Kampung Tengah1097597 Sub-totals Gorom and Watubela archipelagoes 193.5138,96946,78846,913 81
Notes: (a) The 2010 Census populations of Bula Barat and Teluk Waru Districts are included with the figures for Bula District, from which they were cut out. (b) The 2010 Census population of Siwalalat District is included with the figure for Werinama District, from which it was cut out. (c) The 2010 Census populations of Kilmury, Kian Darat, Lian Vitu (or Siritaun Wida Timur), and Ukar Sengan Districts are included with the figures for Seram Timur District, from which they were cut out. (d) The 2010 Census population of Gorom Timur District is included with the figure for Pulau Gorom district, from which it and Pulau Panjang District were cut out. (e) The 2010 Census population of Kesui Watubela (or Wakate) District excludes the figure for Teor District, which was cut out of it. (f) Ukar Sengan District, which was only formed in 2025 from part of East Seram District, and inaugurated on 20 May 2025, was not included in the 2010 and 2020 censuses. Thus the figures for 2010 and 2020 are still included in those for East Seram District.
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