Ukrainians (Ukrainian: ukrayintsi, ukrayintsi, [ukra'jinjtsji]) are an East Slavic ethnic group native to Ukraine, which is by total population the sixth-largest nation in Europe. The Constitution of Ukraine applies the term 'Ukrainians' to all its citizens. Also among historical names of the people of Ukraine, Rusyns (Ruthenians), Cossacks, etc. can be found. According to most dictionary definitions, a descriptive name for the "inhabitants of Ukraine" is Ukrainian or Ukrainian people.
Ukraine was inhabited by pagan tribes until Byzantine rite Christianity was introduced by the turn of the first millennium. It was imagined by later writers who sought to put Kievan Christianity on the same level of primacy as Byzantine Christianity that Apostle Andrew himself had visited the site where the city of Kiev would be later built. However it was only by the 10th century that the emerging state, the Kievan Rus', became influenced by the Byzantine Empire; the first known conversion was by the Princess Saint Olga who came to Constantinople in 945 or 957. Several years later, her grandson, Knyaz Vladimir baptised his people in the Dnieper River. This began a long history of the dominance of the Eastern Orthodoxy in Ruthenia (Ukraine). Ukrainians are predominantly Orthodox Christians. In the eastern and southern areas of Ukraine the Ukrainian Orthodox Church under the jurisdiction of the Moscow Patriarchate is the most common. In central and western Ukraine there is support for the Ukrainian Orthodox Church - Kiev Patriarchate headed by Patriarch Filaret and also in the western areas of Ukraine and with smaller support throughout the country there is support for the Ukrainian Autocephalous Orthodox Church headed by Metropolitan Mefodiy. In the Western region known as Galicia the Ukrainian Greek Catholic Church, one of the Eastern Rite Catholic churches has a strong membership. Since the fall of the Soviet Union there has been a growth of Protestant churches and Rodnovery, a contemporary Slavic modern pagan religion. There are also ethnic minorities that practice other religions, i.e. Crimean Tatars (Islam), and Jews and Karaim (Judaism). A 2016 survey conducted by the Razumkov Centre found that majority of Ukrainian populations was adhering to Christianity (81.9%). Of these Christians, 65.4% are Eastern Orthodox (25.0% of the Kiev Patriarchate and 15.0% of the Moscow Patriarchate and 1.8% of the Ukrainian Autocephalous Orthodox Church, and 23.2% are simply Orthodox), 7.1% are simply Christians, 6.5% are Greek Catholics, 1.0% are Latin Rite Catholics and a further 1.9% are Protestants. As of 2016, 16.3% of the population does not claim a religious affiliation, and 1.7% adheres to other religions. According to the same survey, 70% of the population of Ukraine declared to be believers, while 6.3% declared to be non-believers, and 2.7% declared to be atheists.

Q: What is the major religion of Ukrainians?
A: Ukrainians are predominantly Orthodox Christians.

Q: Do they practice other religions as well?
A: As of 2016, 16.3% of the population does not claim a religious affiliation, and 1.7% adheres to other religions.

Q: What do Orthodox Christians believe?
A: unknown

Q: How are religious minorities treated?
A: unknown
What is the history of their religion?
Ukraine was inhabited by pagan tribes until Byzantine rite Christianity was introduced by the turn of the first millennium. Since the fall of the Soviet Union there has been a growth of Protestant churches and Rodnovery, a contemporary Slavic modern pagan religion. the Kievan Rus', became influenced by the Byzantine Empire; Ukraine was inhabited by pagan tribes until Byzantine rite Christianity was introduced by the turn of the first millennium. Ukraine was inhabited by pagan tribes until Byzantine rite Christianity was introduced by the turn of the first millennium.
Ukraine was inhabited by pagan tribes until Byzantine rite Christianity was introduced by the turn of the first millennium.