Odesa Oblast (Ukrainian: Одеська область, romanized: Odeska oblast), also referred to as Odeshchyna (Одещина), is an oblast (province) of southwestern Ukraine, located along the northern coast of the Black Sea. Its administrative centre is the city of Odesa. Population: 2,351,382 (2022 estimate).

The length of coastline (sea-coast and estuaries) reaches 300 km (190 mi), while the state border stretches for 1,200 km (750 mi). The region has eight seaports and five of the biggest lakes, including Yalpuh Lake, in Ukraine. With over 80,000 ha (200,000 acres) of vineyards, it is also the largest wine-growing region in Ukraine.

Evidence of the earliest inhabitants in this area comes from the settlements and burial grounds of the Neolithic Gumelnița, Cucuteni-Trypillia and Usatove cultures, as well as from the tumuli and hoards of the Bronze Age Proto-Indo-Europeans. In the 1st millennium B.C. Milesian Greeks founded colonies along the northern coast of the Black Sea, including the towns of Tyras and Niconium in the modern Odesa Oblast. The Greeks left behind painted vessels, ceramics, sculptures, inscriptions, arts and crafts that indicate the prosperity of their ancient civilisation.

The culture of Scythian tribes inhabiting the Black Sea littoral steppes in the first millennium B.C. has left artefacts in settlements and burial grounds, including weapons, bronze cauldrons, other utensils, and adornments. By the beginning of the 1st millennium A.D. the Sarmatians displaced the Scythians. In the 3rd–4th centuries A.D. a tribal alliance, represented by the items of Chernyakhov culture, developed. From the middle of the first millennium the formation of the Slavic people began. In the 9th century the eastern Slavs united into a state with Kyiv as its centre. The Khazars, Polovtsy and Pechenegs were the Slavs' neighbours during different times. Archeological evidence of the period of the 9th–14th centuries survives in materials from the settlements and cities of Kievan Rus': Belgorod, Caffa-Theodosia, and Berezan Island.

The Mongols took over the Black Sea littoral in the 13th century.

From about 1290 parts of the region were territories of the Republic of Genoa, becoming a center of Genoese commercial activity until at least the middle of the 14th century.

The Grand Duchy of Lithuania acquired the area at the beginning of the 15th century.

In 1593 the Ottoman Empire set up in the area what became known as its Dnieper Province (Özü Eyalet), unofficially known as the Khanate of Ukraine. The northern outskirts of the current oblast, forming part of Podolia, remained within Lithuania, and then passed to the Kingdom of Poland in 1569, within which they were located in Bracław County in the Bracław Voivodeship in the Lesser Poland Province. Savran, Kodyma and Józefgród were Polish private towns, the two latter founded by the Lubomirski family. The bulk of the territory of the Odesa Oblast passed to Russian control in 1791 in the course of the Russian southern expansion towards the Black Sea at the end of the 18th century, whereas the northern outskirts were annexed by Russia in the Second Partition of Poland in 1793. Russian historiography refers to the annexed area from 1791 as the Ochakov Oblast.

After the February Revolution of 1917 in Russia the area became part of the Ukrainian People's Republic (1917–1918), but soon succumbed first to the Russian Volunteer Army (part of the White movement) and then to the Russian Bolshevik Red Army. By 1920 the Soviet authorities had secured the territory of Odesa Oblast, which became part of the Ukrainian SSR. The oblast was established on 27 February 1932 from five districts: Odesa Okruha, Pervomaisk Okruha, Kirovohrad Okruha, Mykolaiv Okruha, and Kherson Okruha. It was the scene of Soviet genocidal crimes, including the Holodomor of 1932–1933 and Polish Operation of the NKVD of 1937.

In 1937 the Central Executive Committee of the USSR split off the eastern portions of the Odesa Oblast to form the Mykolaiv Oblast.

During World War II Axis forces conquered the area and Romania occupied the oblast and administered it as part of the Transnistria Governorate (1941–1944). After the war the Soviet administration reestablished the oblast with its pre-war borders.

Odesa Oblast expanded in 1954 to absorb Izmail Oblast (also known as the Budjak region of Bessarabia), formed in 1940 as a result of the Soviet occupation of Bessarabia and Northern Bukovina (from Romania), when Northern and Southern parts of Bessarabia were given to the Ukrainian SSR.

During the 1991 referendum, 85.38% of votes in Odesa Oblast favored the Declaration of Independence of Ukraine. A survey conducted in December 2014 by the Kyiv International Institute of Sociology found that 2.3% of the oblast's population supported their region joining Russia, 91.5% did not support the idea, and the rest were undecided or did not respond. A poll reported by Alexei Navalny and conducted in September 2014 found similar results.

On 4-5 July 2022 during international Ukraine Recovery Conference (URC 2022) in Lugano Switzerland pledged to support the rebuilding of Odesa region.

Ukraine's largest oblast by area, the Odesa Oblast occupies an area of around 33,314 square kilometres (12,863 sq mi). It is characterised by largely flat steppes – part of the Black Sea Lowland – divided by the estuary of the Dniester river, and bordered to the south by the Danube. Its Black Sea coast has numerous sandy beaches, estuaries and lagoons. The region's soils (especially chernozems) have a reputation for fertility, and intensive agriculture is the mainstay of the local rural economy. The southwest has many orchards and vineyards, while arable crops grow throughout the region.

• Historic Centre of Odesa, UNESCO World Heritage Site
• Odesa Opera
• Akkerman fortress
• Potemkin Stairs

Significant branches of the oblast's economy are:

• oil refining and chemicals processing;
• transportation (important sea and river ports, oil pipelines and railway);
• viticulture and other forms of agriculture, notably the growing of wheat, maize, barley, sunflowers and sugar beets.

The region's industrial capability is principally concentrated in and around Odesa.

The oblast's population (as at the start of 2021) was 2,368,107 people, nearly 43% of whom lived in the city of Odesa.

According to the Ukrainian national census in 2001, ethnic Ukrainians are by far the largest ethnic group, accounting for 62,8% of the population. They are the dominant ethnic group in the northern, central and southeastern part of the province, as well as in the regional capital of Odesa. Making up 20.7% of the population, Russians are the second-largest group in the region and are mostly concentrated in urban areas, yet they only constitute a relative majority in the southern port city of Izmail. Significant Bulgarian (6.1%) and Moldovan (5.0%) minorities reside in the province, who mostly live in the southeastern part of the region. It has the highest proportion of Jews of any oblast in Ukraine (although smaller than the Autonomous City of Kyiv) and there is a small Greek community in the city of Odesa.

2001 census percent Ukrainians   62.8% Russians   20.7% Bulgarians   6.1% Moldovans   5.0% Gagauz   1.1% Belarusians   0.5% Ashkenazi Jews   0.5% Armenians   0.3%

Bulgarians and Moldovans represent 21% and 13% respectively, of the population in the salient of Budjak, within Odesa Oblast.

Year	Fertility	Birth
1990	1,8	33 166
1991	1,7	32 119
1992	1,6	30 155
1993	1,5	28 185
1994	1,4	26 197
1995	1,4	24 993
1996	1,3	23 666
1997	1,2	22 491
1998	1,2	21 273
1999	1,1	19 969
2000	1,1	20 042
2001	1,1	20 423
2002	1,2	21 227
2003	1,2	22 326
2004	1,3	23 343
2005	1,3	23 915
2006	1,4	25 113
2007	1,5	26 759
2008	1,6	28 780
2009	1,6	28 986
2010	1,6	28 690
2011	1,6	29 225
2012	1,7	30 384

According to the 2001 Ukrainian census, Ukrainian was the mother tongue of 46.3% of the population, 42.0% for Russian, 4.9% for Bulgarian, and 3.8% Romanian.

According to a sociological survey conducted by the Ilko Kucheriv Democratic Initiatives Foundation [uk] from 21 to 27 October 2022, 57.8% of respondents in Odesa Oblast named Ukrainian as their native language, 28.8% — Russian, 5.4% — another language, 7.9% said they found it difficult to say which language they considered their native language or refused to answer.

According to a sociological survey conducted by the Ilko Kucheriv Democratic Initiatives Foundation from 10 to 21 July 2023 in Odesa Oblast, the share of respondents who speak Ukrainian at home has increased to 42% (from 26% in 2021), while the share of those who speak Russian at home has dropped to 54%. To the question "How do you feel about the mandatory use of Ukrainian in the service sector (shops, cafes, barber shops, entertainment venues)?" 59% answered "Positive", 13% — "Negative", 17% — "I don't care", 12% — "Hard to say". To the question "Do you think it is acceptable to perform songs in Russian in the public space of your village/city, for example, performances by street musicians, listening to such songs in cafes/restaurants or supermarkets, etc.?" 30% answered "No", 37% — "Yes", 20% — "I don't care", 12% — "I find it difficult to answer".

0–14 years: 15.5% (male 188,937/female 179,536)

15–64 years: 70.7% (male 812,411/female 867,706)

65 years and over: 14.0% (male 116,702/female 218,808) (2013 official)

total: 38.4 years

male: 35.4 years

female: 41.5 years (2013 official)

The dominant religion in Odesa Oblast is Eastern Orthodox Christianity, professed by 84% of the population. Another 8% declares to be non-religious and 6% are unaffiliated generic Christians. Adherents of Catholicism and Protestantism make up 0.5% of the population respectively.

The Orthodox community of Odesa Oblast is divided as follows:

• Non-denominational – 46%
• Ukrainian Orthodox Church of the Moscow Patriarchate – 31%
• Ukrainian Orthodox Church of the Kyivan Patriarchate – 21%
• Ukrainian Autocephalous Orthodox Church – 1%
• Unknown – 1%

Until 2020, the Odesa Oblast was administratively subdivided into 26 raions (districts) and 7 municipalities which were directly subordinate to the oblast government – (Bilhorod-Dnistrovskyi, Chornomorsk, Izmail, Pivdenne, Podilsk, Teplodar and the administrative centre of the oblast, Odesa).

Name	Ukrainian name	Area (km)	Population 2015	Admin. centre	Urban Population Only*
Odesa	Одеса (місто)	139	1,010,490	Odesa (city)	1,010,490
Bilhorod-Dnistrovskyi ^	Білгород-Дністровський (місто)	31	57,559	Bilhorod-Dnistrovskyi (city)	57,559
Chornomorsk	Чорноморськ (місто)	25	72,553	Chornomorsk (city)	67,323
Izmail ^	Ізмаї́л (місто)	53	72,266	Izmail (city)	72,266
Podilsk	Подільськ (місто)	25	40,613	Podilsk (city)	40,613
Teplodar	Теплодар (місто)	3	10,277	Teplodar (city)	10,277
Pivdenne	Південне (місто)	9	32,149	Pivdenne (city)	32,149
Ananiv Raion	Ананьївський (район)	1,050	26,999	Ananiv	8,441
Artsyz Raion ^	Арцизький (район)	1,379	45,274	Artsyz	14,886
Balta Raion	Балтський (район)	1,317	41,666	Balta	18,940
Berezivka Raion	Березівський (район)	1,637	33,930	Berezivka	12,614
Bilhorod-Dnistrovskyi Raion ^	Білгород-Дністровський (район)	1,852	60,774	Bilhorod-Dnistrovskyi (city)	N/A *
Biliaivka Raion	Біляївський (район)	1,497	94,083	Biliaivka	14,334
Bolhrad Raion ^	Болградський (район)	1,364	69,148	Bolhrad	15,451
Ivanivka Raion	Іванівський (район)	1,162	26,604	Ivanivka	8,807
Izmail Raion ^	Ізмаїльський (район)	1,194	51,584	Izmail (city)	N/A *
Kiliia Raion ^	Кілійський (район)	1,358	52,400	Kiliia	28,434
Kodyma Raion	Кодимський (район)	818	29,586	Kodyma	11,195
Lyman Raion	Комінтернівський (район)	1,499	71,158	Dobroslav	14,028
Liubashivka Raion	Любашівський (район)	1,100	30,688	Liubashivka	10,954
Mykolaivka Raion	Миколаївський (район)	1,093	16,127	Mykolaivka	2,850
Ovidiopol Raion	Овідіопольський (район)	829	78,941	Ovidiopol	32,486
Okny Raion	Окнянський (район)	1,013	20,186	Okny	5,338
Podilsk Raion	Подільський (район)	1,037	27,091	Podilsk (city)	N/A *
Reni Raion ^	Ренійський (район)	861	58,352	Reni	25,527
Rozdilna Raion	Роздільнянський (район)	1,368	37,353	Rozdilna	19,003
Sarata Raion ^	Саратський (район)	1,474	45,057	Sarata	4,351
Savran Raion	Савранський (район)	617	19,083	Savran	6,420
Shyriaieve Raion	Ширяївський (район)	1,502	27,151	Shyriaieve	6,781
Tarutyne Raion ^	Тарутинський (район)	1,874	41,603	Tarutyne	12,932
Tatarbunary Raion ^	Татарбунарський (район)	1,748	38,825	Tatarbunary	10,988
Velyka Mykhailivka Raion	Великомихайлівський (район)	1,436	31,006	Velyka Mykhailivka	8,472
Zakharivka Raion	Захарівський (район)	956	20,233	Zakharivka	8,881

• Note: A caret (^) indicates the two municipalities and nine raions which previously constituted Izmail Oblast until that former oblast's merger with Odesa Oblast on 15 February 1954; these areas lie to the west of the Dniester River, and formerly constituted the territory known as the Budjak (southern Bessarabia). In the 18 July 2020 reorganisation, these nine raions were reduced to three, which also incorporated the two former independent cities.
• Note: Asterisks (*) Though the administrative center of the raion is housed in the city/town that it is named after, cities do not answer to the raion authorities only towns do; instead they are directly subordinated to the oblast government and therefore are not counted as part of raion statistics.

On 18 July 2020, the number of districts (raions) was reduced to seven, now also incorporating the formerly independent cities. (see map). They are now divided into 91 municipalities (hromadas).

Name	Ukrainian name	Area (km)	Population 2001 Census	Admin. centre	Population 2021 Estimate	Number of hromadas
Berezivka Raion	Березівський (район)	5,546	121,518	Berezivka	106,490	16
Bilhorod-Dnistrovskyi Raion	Білгород-Дністровський (район)	5,177	214,211	Bilhorod-Dnistrovskyi	198,682	16
Bolhrad Raion	Болградський (район)	4,477	167,464	Bolhrad	146,424	10
Izmail Raion	Ізмаїльський (район)	3,505	239,096	Izmail	207,333	6
Odesa Raion	Одеський (район)	3,946	1,353,314	Odesa	1,382,541	22
Podilsk Raion	Подільський (район)	7,048	266,948	Podilsk	224,163	12
Rozdilna Raion	Роздільнянський (район)	3,568	106,506	Rozdilna	102,584	9

One of the most famous Odesits is Sergei Utochkin who was a universal sportsman excelling in cycling, boxing, swimming and played football for the Odesa British Athletic Club. Utochkin had challenged a steam-powered tram while running, on a bicycle he beat a galloping horse, while on roller skates he was passing a bicyclist. The next stage for him was to conquest skies. Utochkin managed to buy an airplane from a local banker and completed dozens of exhibition flights. Eventually, he managed to assemble his own Farman-type airplane. In Kyiv, Utochkin was demonstrating his piloting skills in front of some 50,000 people, among which was a future creator of helicopters Igor Sikorsky.

A number of other notable people were born in Odesa, including the poet Anna Akhmatova, former NASA scientist Nicholas E. Golovin who worked with the Apollo program, composer Tamara Maliukova Sidorenko, and the founder of jazz in the Soviet Union Leonid Utyosov.

• The oblast is located in the historic regions of Yedisan (central and eastern parts), Budjak (south-western part) and Podolia (northern outskirts).
• Balta, capital of the Moldavian Autonomous Soviet Socialist Republic in 1924–1929, is located in the northern part of the oblast.

• 
  Intercession Cathedral, Izmail
• 
  Odesa Opera House
• 
  Potemkin Stairs, Odesa
• 
  Arcadia Beach
• 
  Vineyard in Shabo
• 
  Danube Biosphere Reserve
• 
  Shahany Lagoon
• 
  Dried out part of the Kuialnyk Estuary
• 
  Transfiguration Cathedral, Bolhrad
• 
  Old Armenian church, Bilhorod-Dnistrovskyi

• Subdivisions of Ukraine
• Kherson Governorate
• Budjak
• Transnistria
• Gagauzia
• Bessarabia

• Odesa regional administration homepage