East Manggarai Regency (Indonesian: Kabupaten Manggarai Timur) is a regency in East Nusa Tenggara province of Indonesia. Established on 17 July 2007 (out of the eastern six districts of the original Manggarai Regency), the regency has its seat (capital) in the town of Borong. It covers a land area of 2,438.68 km. The population at the 2010 Census was 252,754, and at the 2020 Census was 275,603; the official estimate as at mid 2023 was 310,822.

The local government is aiming to promote a range of tourist sites including the following:

• Nanga Labang village, on the seashore with pristine beaches
• Lake Air Panas (Hot Water) in Rana Masak
• Gampang Mas village near Borong
• Laka Rana Tojong where the Victoria amazonica giant lily grows.

An additional feature of interest in the regency is the Pota Komodo dragon which has similar traits to the more well-known Komodo dragon found in neighbouring West Manggarai Regency. The population of the Pota Komodo dragon has been declining and there is now concern about conservation of the local dragon population.

International visitors travel through various parts of the district, sometimes liaising with local groups such as village Catholic communities. In late 2012, one visiting Polish couple took the decision to be married in Lait Valley in the Kota Komba area.

The East Manggarai Regency, when established in 2007, was divided into six districts (kecamatan), Borong and Kota Kombo districts in the south of the regency and Elar, Sambi Rampas, Poco Renata and Lamba Leda districts in the north. However, after 2010 three additional districts (Elar Selatan, Poco Ranaka Timur and Rana Mese) were created by splitting of existing districts, and in 2021 three more districts were created from existing districts (Kota Komba Utara from part of Kota Komba District, Congkar from part of Sambi Rampas District, and Lamba Leda Utara from part of Lamba Leda District), while Poco Renata and Poco Renata Timur districts were renamed Lamba Leda Selatan and Lamba Leda Timur respectively.

The 12 districts are tabulated below with their areas and their populations at the 2010 Census and the 2020 Census, together with the official estimates as at mid 2023. The table also includes the locations of the administrative centres, the number of administrative villages in each district (a total of 159 rural desa and 17 urban kelurahan), and its post codes.

Kode Wilayah	Name of District (kecamatan)	Area in km	Pop'n Census 2010	Pop'n Census 2020	Pop'n Estimate mid 2023	Admin centre	No. of villages	Post codes
53.19.01	Borong	177.09	61,509	42,600	43,443	Kota Ndora	18	86571
53.19.07	Rana Mese	207.99		28,900	33,275	Golo Mongkok	21	86570
53.19.06	Kota Komba	325.09	46,171	51,300	38,025	Watu Nggene	11	86572
53.19.10	Kota Komba Utara (North Kota Komba)	183.13			21,891	Rana Mbeling	11	86572
53.19.05	Elar	245.00	29,981	15,100	17,747	Tiwu Kondo	15	86581
53.19.09	Elar Selatan (South Elar)	294.00		17,600	19,711	Lempang Paji	14	86580
53.19.04	Sambi Rampas	288.70	26,175	27,300	16,197	Pota	9	86584
53.19.12	Congkar	80.14			14,860	Watunggong	11	86584
53.19.02	Lamba Leda Selatan (South Lamba Leda)	112.35	57,459	33,400	37,074	Mandosawu	24	86583
53.19.08	Lamba Leda Timur (East Lamba Leda)	108.58		27,070	29,496	Lawir	18	86585
53.19.03	Lamba Leda	121.85	31,449	32,600	18,714	Tengku Leda	13	86582
53.19.11	Lamba Leda Utara (North Lamba Leda)	294.76			20,389	Satar Padut	11	86582
	Totals	2,438.68	252,754	275,603	310,822	Borong	176

Notes: (a) including the three kelurahan of Mandosawu, Nggalak Leleng and Satar Peot.
(b) the 2010 population of the new Rana Mese District is included with the figure for Borong District.
(c) including the three kelurahan of Rongga Koe, Tanah Rata and Watu Nggene.
(d) the 2010 and 2020 populations of the new Kota Komba Utara District are included with the figures for Kota Komba District.
(e) including the kelurahan of Tiwu Kondo.
(f) the 2010 population of the new Elar Selatan District is included with the figure for Elar District.
(g) including the kelurahan of Lempang Paji. (h) including the three kelurahan of Nanga Baras, Pota and Ulung Baras.
(i) the 2010 and 2020 populations of the new Congkar District are included with the figures for Sambia Rampas District.
(j) including the three kelurahan of Golo Wangkung, Golo Wangkung Barat and Golo Wangkung Utara.
(k) including the three kelurahan of Bangka Leleng, Mandosawu and Nggalak Leleng.
(m) the 2010 population of the new Lamba Leda Timur District is included with the figure for Lamba Leda Selatan District.
(n) the 2010 and 2020 populations of the new Lamba Leda Utara District are included with the figures for Lamba Leda District.