Odessa or Odesa[1] (Ukrainian: Одеcа, [ɔˈdɛsɑ]; also referred to as Odessa) is a city in southwestern Ukraine on the Black Sea shore. It is the administrative center of the Odessa Oblast (province), and is its own separate district within the oblast. Odessa is a major port on the Black Sea. The mayor of Odessa is Hennadiy Trukhanov.

In 2004, about 1,012,500 people lived in Odessa.

Odessa is a warm water port, but of small military value. Because Turkey controls the Dardanelles and Bosphorus, NATO can control ships moving between Odessa and the Mediterranean Sea.  The city has two important ports: Odessa itself and Yuzhne.  Yuzhne is an oil terminal that is important to the world.  It is in Odessa's suburbs. Another important port, Chornomorsk, is in the same oblast, to the south-west of Odessa. Important transportation comes together at these ports. Railways and pipelines come to these ports. Pipelines connect Odessa's oil and chemical factories to Russia's and the EU's.

Odessa is the fifth-largest city in Ukraine and its most important trading city. In the 19th century it was the fourth city of Imperial Russia, after Moscow and St. Petersburg, and Warsaw.[2] Its old buildings seem more Mediterranean than Russian. They were made like French and Italian buildings. People in Odessa could always laugh and had a spirit of freedom.  The reason is probably because it is a nice place and because the people accept others.  They let others be the kind of people that they are.

A very old Greek colony named Olbia (Greek: Ολβία, glorious) probably was where the city is now. Many monuments from old times link this place  to the Eastern Mediterranean.  In the Middle Ages these lands were a part of the Kievan Rus, Galich and Volyn Principality, the Golden Horde, the Great Lithuanian Principality, the Crimean Khanate and the Ottoman Empire. Crimean Tatars traded there in the 14th century. At the time of the Russian–Turkish wars these lands were captured by Russia.  That was at the end of the 18th century.[3]

From 1819–1858 Odessa was a free port (porto franco). During the Soviet time it was the most important port of trade in the U.S.S.R. and a Soviet naval base. On January 1, 2000 the Quarantine Pier of Odessa trade sea port was made a free port and free economic zone for 25 years.

In the 15th century AD, nomadic tribes of the Nogays under the government of the Khanate of Crimea lived in the place that is now Odessa. During the reign of Khan Haci I Giray, the Khanate was in danger from the Golden Horde and the Ottoman Turks.  To get help, the khan gave Odessa to the Grand Duchy of Lithuania.
The place now named Odessa was then named Khadjibey (also spelled as Khadjibei, Khadzhibei, or Gadzhibei; Lithuanian: Chadžibėjus; Crimean Tatar and Turkish: Hacibey).  It was part of the Dykra region.  Few people lived in that region.  They were part of the Turkic tribes.  The land was mostly empty steppes.

The Ottoman Empire controlled Khadjibey after 1529.  The region surrounding Khadjibey was named Yedisan.  In the middle of the 18th century, the Ottomans rebuilt a fortress at Khadjibey.  It was named Eni Dunia (Turkish: Yeni Dünya, literally "new world").

At the time of the war between Russia and Turkey (1787–1792), on 25 September 1789, Ivan Gudovich led a group of Russian soldiers to Khadjibey.  They took Khadjibey and Yeni Dünya for the Russian Empire.  A Spaniard in the Russian army named Major General José de Ribas led one group of soldiers.  Russians named him Osip Mikhailovich Deribas.  The main street in Odessa today is named Deribasovskaya street after him.  Turkey let Russia keep the city in the Treaty of Jassy (agreement of Jassy) in 1792.  Russians made it a part of a place they named Novorossiya (New Russia).

The Russian government decided to build a naval fortress on the ruins of Khadjibey city in 1794.  This became the city named Odessa by January 1795.  In that year its new name was first written in government letters. The reasons for the new name are lost but people have made stories.  According to one of the stories, when someone said Odessos should be the name for the new Russian port, Catherine II said that all names in the South of the Empire were already 'masculine,' and she did not want another one, so she decided to change it to more 'feminine' Odessa. This story may be false.  There were at least two cities (Eupatoria and Theodosia) with names that sound 'feminine' for a Russian; also, Catherine II did not speak Russian when she was a child, and lastly, all cities are feminine in Greek (and in Latin).  Another story is that the name 'Odessa' is from word-play in French.  French was then the language spoken at the Russian court. 'Plenty of water' is assez d'eau in French.  If one says this backwards, it sounds like the Greek colony's name.  Word-play about water makes sense. Odessa is next to a very big body of water but has a little fresh water.  Anyhow, there is still a link with the name of the old Greek colony.  So there may be some truth in the things people said long ago.

The new city quickly became a major success. Its early growth owed much to the work of the Duc de Richelieu, who was the city's governor between 1803–1814. Having fled the French Revolution, he had served in Catherine's army against the Turks. He is credited with designing the city and organising its amenities and infrastructure, and is considered one of the founding fathers of Odessa, together with another Frenchman, Count Alexandre Langeron, who succeeded him in office. Richelieu is commemorated by a bronze statue, unveiled in 1828 to a design by Ivan Martos.

In 1819 the city was made a free port, a status it retained until 1859. It became home to an extremely diverse population of Ukrainians, Russians, Jews, Greeks, Bulgarians, Albanians, Armenians, Italians, Frenchmen, Germans and traders representing many other European nationalities (hence numerous 'ethnic' names on the city's map, e.g., Frantsuszkiy (French) and Italianskiy (Italian) Boulevards, Grecheskaya (Greek), Evreyskaya (Jewish), Arnautskaya (Albanian) Streets). Its cosmopolitan nature was documented by the great Russian poet Alexander Pushkin, who lived in internal exile in Odessa between 1823–1824. In his letters he wrote that Odessa was a city where "you can smell Europe.  French is spoken and there are European papers and magazines to read".

Odessa's growth was interrupted by the Crimean War of 1853–1856, during which it was bombarded by British and French naval forces.  It soon recovered and the growth in trade made Odessa Russia's largest grain-exporting port.  In 1866 the city was linked by rail with Kiev and Kharkiv as well as Iaşi, Romania.

The city became the home of a large Jewish community during the 19th century, and by 1897 Jews were estimated to be about 37% of the population.  They were, however, repeatedly subjected to severe persecution.  Pogroms were carried out in 1821, 1859, 1871, 1881, and 1905.  Many Jews fled abroad, particularly to Palestine after 1882, and the city became an important base of support for Zionism.

In 1905 Odessa was the place of a workers' uprising supported by the crew of the Russian battleship Potemkin (also see Battleship Potemkin uprising) and Lenin's Iskra.  Sergei Eisenstein's famous motion picture The Battleship Potemkin commemorated the uprising and included a scene where hundreds of Odessan citizens were killed on the great stone staircase (now popularly known as the "Potemkin Steps"), in one of the most famous scenes in motion picture history.  At the top of the steps, which lead down to the port, stands a statue of Richelieu.  The actual massacre took place in streets nearby, not on the steps themselves, but the movie caused many to visit Odessa to see the site of the "slaughter".  The steps continue to be a tourist attraction.  The film was made at Odessa's Cinema Factory, one of the oldest cinema studios in the former Soviet Union.

Following the Bolshevik Revolution in 1917 during World War I, Odessa was occupied by several groups, including the Ukrainian Tsentral'na Rada, the French Army, the Red Army and the White Army.  Finally, in 1920, the Red Army took control of Odessa and united it with the Ukrainian SSR, which later became part of the USSR.

The people of Odessa suffered from a great famine that occurred in 1921–1922 as a result of the war.   Romanian and German forces from 1941–1944 occupied the city during World War II, causing severe damage and many casualties.

Under the Axis occupation, approximately 60,000 Odessans (mostly Jews) were either massacred or deported.  Many parts of Odessa were damaged during its fall and later recapture in April 1944, when the city was finally liberated by the Soviet Army.  It was one of the first four Soviet cities to be awarded the title of "Hero City" in 1945.

During the 1960s and 1970s the city grew tremendously.  Nevertheless, between the 1970s and 1990s, the majority of Odessa's surviving Jews emigrated to Israel, the United States and other Western countries.  Large-scale domestic migrationof Odessan middle and upper classes to Moscow and Leningradthat offered even greater opportunities for career advancement.  But the city's grew rapidly by filling the void with new rural migrants elsewhere from Ukraine, industrial professionals invited from Russia as well as other Soviet republics.  Despite being part of Ukraine Socialist Republic, the city preserved and somewhat reinforced its unique cosmopolitan mix of Russian/Ukrainian/Mediterranean culture and a predominantly Russophone environment with a uniquely accented dialect of Russian spoken in the city.  The city's Russian, Ukrainian, Greek, Armenian, Moldovan and Azeri and Jewish communities have influenced different aspects of Odessa.

In 1991, after the collapse of Communism, the city became part of newly independent Ukraine.  Today Odessa is a city of around 1.1 million people.  The city's industries include shipbuilding, oil refining, chemicals, metalworking and food processing.  Odessa is also a Ukrainian naval base and home to a fishing fleet.  It is also known for its huge outdoor market, the Seventh-Kilometer Market.

The transportation network of Odessa consists of trams[4] (streetcars), trolleybuses, buses; and marshrutkas.

Odessa is (Google Map) on terraced hills overlooking a small harbor, approximately 31 km (19 mi.) north of the estuary of the Dniester river and some 443 km (275 mi) south of the Ukrainian capital Kiev. The city has a continental climate (Dfa in the Köppen climate classification) with average temperatures in January of -2 °C (29 °F), and July of 22 °C (73 °F). It averages only 350 mm (14 in) of precipitation annually.

The primary language spoken is Russian, with Ukrainian being less common despite its being an official language in Ukraine. The city is a mix of many nationalities and ethnic groups, including Ukrainians, Russians, Jews, Greeks, Moldovans, Bulgarians, Armenians and Turks among others.

Odessa is a popular tourist destination, with many resorts in and around the city.

The Tolstoy, Vorontsov, and Potocki families owned palaces in Odessa, which can still be visited.

The writer Isaac Babel was born in the city, which has also produced several famous musicians, including the violinists Nathan Milstein, Mischa Elman and David Oistrakh, and the pianists Benno Moiseiwitsch, Sviatoslav Richter and Emil Gilels. The chess player Efim Geller was born in the city. (All listed, except for Richter, are representatives of the city's Jewish community.)

The most popular Russian show-business people from Odessa are Yakov Smirnoff (comedian), Mikhail Zhvanetsky (legendary humorist writer, who began his career as port engineer) and Roman Kartsev (comedian).  Their success in 1970s contributed to Odessa's status of a "capital of Soviet humour". Later several humour festivals were established in the city, including the celebration of the April Fools' Day.

Most of the city's 19th century houses were built of limestone mined nearby. Abandoned mines were later used and broadened by local smugglers.  This created a complicated labyrinth of underground tunnels beneath Odessa, known as "catacombs".  They are a now a great attraction for extreme tourists. Such tours, however, are not officially sanctioned and are dangerous because the layout of the catacombs has not been fully mapped and the tunnels themselves are unsafe. These tunnels are a primary reason why subway was never built in Odessa.

The economy of Odessa is based its port and close distance to nearby ice-free ports in the mouths of the Dnieper, the Southern Bug, the Dniester and the Danube rivers.  During the Soviet period Odessa was the USSR's largest trading port. Since Ukraine's independence, Odessa remains the busiest international port in the country. Odessa is also a home to almost 5% of all IT companies registered in Ukraine.[5] That helps the city to thrive and attract software programmers from other cities of Ukraine and abroad.[6]