The Ukrainian Autocephalous Orthodox Church in Diaspora is an Eastern Orthodox Christian religious organization of Ukrainian diaspora under jurisdiction of the Ecumenical Patriarchate for parishes outside of the North America. It consists of three eparchies (dioceses), ruled by three bishops. The Church's current leader is Metropolitan Antony who concurrently is a primate of the Ukrainian Orthodox Church of the USA.

What was to become the Eparchy of Western Europe, Australia, and New Zealand has its beginnings in the influx of Ukrainians into the Western Europe following the defeat of Germany during World War II and the Soviet reoccupation of Ukraine. At that time thousands of Ukrainians, including hierarchs and clergy of the Ukrainian Autocephalous Orthodox Church, fled to the West to escape the Soviets. In July 1945 the first council (sobor) of the Ukrainian Autocephalous Orthodox Church Abroad was held in Germany to organize the life of the church in the West.

Germany was initially the center of the Ukrainian Autocephalous Orthodox Church Abroad due to the vibrant parish life fostered by the influx of immigration from Ukraine. As these immigrants continued on to North America and even Australia and New Zealand, however, the size of the Ukrainian Autocephalous Orthodox Church in Western Europe declined, and by the 1950s most of its hierarchy had relocated to North America, leaving two bishops, Metropolitan Polycarp (Sikorsky) of Lutsk and Archbishop Nicanor (Abramovych) of Chyhyryn, to care for the Ukrainian Orthodox Christians remaining in Western Europe.

The Ukrainian Orthodox in Western Europe were divided between the two bishops, with Archbishop Nicanor supervising the remaining parishes in Germany and Metropolitan Polycarp, who had headed the Ukrainian Autocephalous Orthodox Church in Ukraine during the war years under the oversight of Metropolitan Dionysius (Waledynski) of Warsaw, overseeing its communities in the rest of Western Europe as well as its fledgling parishes in Australia and New Zealand. At the 1952 council of the Ukrainian Autocephalous Orthodox Church in Paris Archbishop Nicanor was elevated to the rank of metropolitan and designated as the 'deputy metropolitan' of the jurisdiction's first hierarch, Metropolitan Polycarp.

When Metropolitan Polycarp reposed on 22 October 1953 Metropolitan Nicanor was elected first hierarch of the Ukrainian Autocephalous Orthodox Church, with the North America-based Bishop Mstyslav (Skrypnyk) of Pereyaslav being elected deputy metropolitan in 1956.

On 27 October 1991 Archimandrite John (Derewianka) was consecrated Bishop of London and Great Britain, in 1999 being placed over all the Ukrainian Orthodox parishes in Western Europe and in 2000 being given care of the Ukrainian Orthodox in Australia and New Zealand as well.

In October 2004 the ninth council of the Ukrainian Orthodox Church of the Diaspora nominated Archimandrite Andriy (Peshko) for election as auxiliary bishop for the Church in Western Europe. Fr. Andriy was consequently elected Bishop of Krateia by the Holy Synod of the Church of Constantinople and, after his consecration in December 2004, took up oversight of the Ukrainian Orthodox Church in the United Kingdom. Bishop Andriy served in the diocese until his election in 2008 as auxiliary of the Ukrainian Orthodox Eparchy of Central Canada.

As a consequence of decisions made at the July 2016 Sobor of the Ukrainian Autocephalous Orthodox Church (Ecumenical Patriarchate) in Australia and New Zealand, three significant changes were made. The first was that Archbishop Ioann Derewianka resigned his episcopal responsibilities due to declining health. Secondly, the New Jersey (U.S.) based first hierarch of the Ukrainian Orthodox Church, Metropolitan Antony (Scharba) assumed direct episcopal responsibility for the Church in Australia and New Zealand while the newly appointed Archbishop Daniel, who is also based in the U.S., was assigned episcopal responsibility for Western Europe and the United Kingdom. Thirdly, to avoid confusion with the non-canonical church if the same name in Ukraine, the decision was made to change the name from the Ukrainian Autocephalous OrthodoxChurch of Australia and New Zealand to the Ukrainian Orthodox Church in Australia.

• Ukrainian Autocephalous Orthodox Church
• Ukrainian Orthodox Church of Canada
• Ukrainian Orthodox Church of the USA
• History of Christianity in Ukraine