East Flores Regency (Indonesian: Kabupaten Flores Timur) is a regency in East Nusa Tenggara province of Indonesia. Established in 1958, the regency has its seat (capital) in Larantuka on Flores Island. It covers a land area of 1,812.58 km, and it had a population of 232,605 as of the 2010 census and 276,896 at the 2020 Census; the official estimate as of mid-2023 was 288,310 - comprising 141,738 males and 146,572 females. The regency encompasses the eastern tip of the island of Flores, together with all of the adjacent islands of Adonara and Solor to the east of Flores (and both part of the Solor Archipelago), with some much smaller offshore islands. On 4 October 1999, the island of Lembata (formerly called Lomblen) at the eastern end of the Solor Archipelago was separated from the East Flores Regency to create its own Regency.

The regency is divided into nineteen districts (kecamatan), tabulated below with their areas and their populations at the 2010 Census and the 2020 Census, together with the official estimates as of mid-2023 (rounded to the nearest 100 persons). The table also includes the locations of the district administrative centres, the number of administrative villages in each district (totaling 229 rural desa and 21 urban kelurahan), and its postcode.

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
53.06.01	Wulanggitang	225.85	13,143	14,780	15,100	Boru	11	86256
53.06.02	Titehena	154.84	11,145	12,974	13,400	Lewolaga	14	86255
53.06.16	Ile Bura	118.32	6,165	7,517	7,900	Lewotobi	7	86254
53.06.05	Tanjung Bunga	257.57	11,880	14,184	14,800	Waiklibang	16	86251
53.06.15	Lewolema	92.84	7,951	9,694	10,200	Kawaliwu	7	86252
53.06.03	Larantuka (town)	48.91	37,348	40,828	41,500	Larantuka	20	86212 -86219
53.06.04	Ile Mandiri	72.76	9,145	11,506	12,200	Lewohala	8	86211
53.06.14	Demon Pagong	85.40	4,283	4,916	5,100	Lewokluok	7	86219
	Totals on Flores Island	1,056.49	101,060	116,398	120,200		90
53.06.06	Solor Barat (West Solor)	128.20	9,321	11,180	11,700	Ritaebang	15	86272
53.06.19	Solor Selatan (South Solor)	31.58	4,841	6,874	7,500	Kalike	7	86273
53.06.07	Solor Timur (East Solor)	66.56	12,879	15,975	16,800	Menanga	17	86271
	Totals on Solor Island	226.34	27,041	34,029	36,000		39
53.06.08	Adonara Barat (West Adonara)	79.71	11,743	13,529	14,000	Waiwadan	18	86263
53.06.09	Wotan Ulu Mado	86.31	7,871	9,968	10,600	Baniona	12	86260
53.06.18	Adonara Tengah (Central Adonara)	42.73	10,686	13,312	14,000	Lewobele	13	86264
53.06.10	Adonara Timur (East Adonara)	91.06	26,161	30,299	31,300	Waiwerang	21	86261
53.06.13	Ile Boleng	49.30	13,948	17,416	18,400	Senadan	21	86253
63.06.12	Witihama	79.43	14,140	17,460	18,400	Oringbele	16	86266
53.06.11	Kelubagolit	44.41	10,210	12,650	13,300	Pepak Kelu	12	86265
53.06.17	Adonara	56.80	9,745	11,835	12,400	Sagu	8	86262
	Totals on Adonara Island	529.75	104,504	126,469	132,400		121

Note: (a) comprises 18 kelurahan (Amagarapati, Balela, Ekasapta, Larantuka, Lewolere, Lohayong, Lokea, Pantai Besar, Pohon Bao, Pohon Sirih, Postoh, Puken Tobi Wangi Bao, Sarotari, Sarotari Tengah, Sarotari Timur, Waibalun, Waihali and Weri) and 2 desa (Mocantarak and Lamawalang); Mocantarak desa is a large exclave of the district, separated by part of Ile Mandiri District from the rest of Larantuka District. (b) including the kelurahan of Ritaebang.
(c) Adonara Timur District, notwithstanding its name, actually occupies the south-central part of Adonara Island, with Wotan Ulu Mado District to the southwest and Ile Boleng District to the southeast. (d) including the two kelurahan of Lamatewelu and Waiwerang Kota.
(e) Adonara District covers only the north-central part of Adonara Island ("Adonara Utara"), with Kelubagolit and Witihama Districts to the east and Adonara Barat and Adonara Tengah Districts to the west.

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