Jember Regency is a regency of East Java province, in Indonesia. The land area is 3,314.13 km, and the population was 2,332,726 at the 2010 census and 2,536,729 at the 2020 Census; the official estimate as at mid 2023 was 2,600,663 (comprising 1,298,852 males and 1,301,811 females). Its administrative capital is the urban area of Jember, which with 366,932 inhabitants in mid 2023 is the third largest urban area in East Java province (after Surabaya and Malang) but does not have municipality or city status as it is split between three separate administrative districts (kecamatan). Jember is famous for its tobacco farms and traditional food called tape which is made of fermented cassava.

Jember Regency has a total area of 3,314.13.69 km. It shares its borders with the regencies of Lumajang (to the west), Probolinggo, Bondowoso and Situbondo (to the north), and Banyuwangi (to the east). To the south lies the Indian Ocean, where the regency includes the island of Nusa Barong, located to the south of Java.

Jember Regency consists of thirty-one districts (Indonesian: kecamatan), listed below with their areas and their populations at the 2010 Census and the 2020 Census, together with the official estimates as at mid 2023. All districts have the same name as the towns or villages which provide their administrative centres. The table also includes the locations of the district administrative centres, the number of villages in each district (totaling 226 rural desa and 22 urban kelurahan - the latter comprising the 3 districts forming the Jember urban area), and its post code(s).

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 code(s)
35.09.02	Kencong	65.40	65,173	71,430	71,327	Kencong	5	68167
35.09.04	Gumukmas	90.53	79,224	87,724	89,412	Gumukmas	8	68165
35.09.08	Puger	158.97	114,506	123,763	125,496	Puger Kulon	12	68164
35.09.11	Wuluhan	139.26	114,695	123,999	128,426	Dukuhdempok	7	68162
35.09.12	Ambulu	101.41	105,103	116,361	120,660	Ambulu	7	68172
35.09.18	Tempurejo	515.99	70,663	78,926	81,515	Tempurejo	8	68173
35.09.30	Silo	344.42	103,850	108,150	111,292	Sempolan	9	68184
35.09.26	Mayang	57.78	48,362	50,971	52,550	Tegalrejo	7	68182
35.09.23	Mumbulsari	90.00	62,339	68,009	70,018	Mumbulsari	7	68174
35.09.16	Jenggawah	61.24	81,318	87,682	91,175	Wonosari	8	68171
35.09.17	Ajung	58.84	74,416	82,046	85,662	Klompangan	7	68175
35.09.13	Rambipuji	55.00	78,934	86,834	88,426	Rambipuji	8	68152
35.09.10	Balung	49.39	77,005	81,680	84,240	Balung Lor	8	68161
35.09.05	Umbulsari	71.46	69,539	78,245	79,247	Umbulsari	10	68166
35.09.07	Semboro	45.20	43,475	49,070	50,049	Semboro	6	68157
35.09.01	Jombang	53.89	50,003	55,553	56,229	Jombang	6	68168
35.09.03	Sumberbaru	161.04	99,416	115,270	115,692	Yosorati	10	68156
35.09.06	Tanggul	202.62	82,760	93,057	93,921	Tanggul Kulon	8	68155
35.09.09	Bangsalsari	161.75	113,905	124,264	127,888	Bangsalsari	11	68154
35.09.14	Panti	181.00	59,399	65,084	66,933	Glagahwero	7	68153
35.09.15	Sukorambi	46.92	37,950	41,161	42,416	Sukorambi	5	68151
35.09.22	Arjasa	35.88	38,055	41,295	42,597	arjasa	6	68191
35.09.24	Pakusari	31.26	41,713	45,059	46,826	Sumberpinang	7	68181
35.09.27	Kalisat	52.67	74,962	78,428	80,687	Glagahwero	12	68193
35.09.28	Ledokombo	133.84	62,528	68,193	70,455	Sumberlesung	10	68196
35.09.31	Sumberjambe	132.93	60,126	62,635	64,765	Sumberjambe	9	68195
35.09.29	Sukowono	45.13	58,734	60,317	62,335	Sukowono	12	68194
35.09.25	Jelbuk	73.38	31,962	32,339	33,692	Jelbuk	6	68192
35.09.19	Kaliwates	24.74	111,861	125,855	127,156	Manggli	7	68131 - 68137
35.09.21	Sumbersari	35.98	126,279	132,802	136,528	Karangrejo	7	68121 - 68126
35.09.20	Patrang	36.71	94,471	100,527	103,048	Patrang	8	68111 - 68118
	Totals	3,314.13	2,332,726	2,536,729	2,600,663		248

Notes: (a) includes the substantial offshore island of Nusa Barong (Pulau Nusa Barong, which forms the administrative village - or desa - of Puger Wetan) as well as 13 much smaller offshore islands.
(b) includes 2 small offshore islands. (c) includes 12 small offshore islands. (d) except Karanganyar village, which has the post code of 68132. (e) includes 22 small offshore islands.
(f) except Tegalrejo village, which has the post code of 68118. (g) except Plalangan village, which has the post code of 68113.
(h) the last three districts (indicated by "(h)" above) together constitute the urban area of Jember town.

The "town" of Jember is composed of 3 separate districts (kecamatan) but has no overall administration. It is subdivided into 22 kelurahan as follows:

• Kakiwates District comprises the kelurahan of Jember Kidul, Kaliwates, Kebon Agung, Kepatihan, Mangli, Sempusari and Tegal Besar.
• Sumbersari District comprises the kelurahan of Antirogo, Karangrejo, Kebonsari, Kranjingan, Sumbersari, Tegalgede and Wirolegi.
• Patrang District comprises the kelurahan of Banjarsengon, Baratan, Bintoro, Gebang, Jemberlor, Jumerto, Patrang and Slawu.

There were 2,332,726 people living in Jember Regency at the 2010 Census. The population has risen by 2020 to 2,536,729; the official estimate as at mid 2023 was 2,600,663, giving an average density of about 784.72 people/km.

Jember Regency is an heterogeneous area where many ethnic groups are mingled and live together. Most of its population are Javanese and Madurese people, with a small percentage of ethnic Chinese, Balinese, Arabic and Indian.

Most citizens speak the Javanese language or the Madurese language, and sometimes a mixed dialect of both Javanese and Madurese languages. Many citizen speak Indonesian for official and business purposes only, and to communicate with non-Javanese or non-Madurese people.

The Jember Fashion Carnaval is an annual event. In the tenth carnival in 2011, over 600 participants walked along the world's longest catwalk. It ran for 3.6 kilometres (2.2 mi), along Jalan P.B. Sudirman (Central Park) and Jalan Gajah Mada up to the Jember Sport Hall.

An expansion of dormant Notohadinegoro Airport was verified for reuse/operational in June 2014. The airport now has 1,705 meters runway and was ready to serve up to ATR 72/600.

However, the airport has been closed since April 2020 with no plans to reopen. High jet fuel prices and a lack of demand make Notohadinegoro Airport unprofitable for domestic airlines.

• Tiara Andini (born 2001), singer and actress
• Bayu Gatra (born 1991), professional footballer

• Culture of Jember
• Mayang River
• SMK PGRI 05 Jember

• Official website
• Official website: [1]
• Jember travel guide from Wikivoyage
• Witton, Patrick (2003). Indonesia (7th ed.). Melbourne: Lonely Planet. pp. 294–295. ISBN 1-74059-154-2.