1. Slavs: The largest ethnic group in Europe, Slavs are mostly found in Eastern and Central Europe. Some of the major subgroups of Slavic peoples include Russians, Ukrainians, Poles, Czechs, Slovaks, Serbs, and Bulgarians.
2. Germanic peoples: This group includes people from countries like Germany, Austria, Switzerland, Liechtenstein, and parts of France and Italy.
3. Romance peoples: This group encompasses people from countries such as France, Italy, Spain, Portugal, and Romania, as well as parts of Switzerland, Belgium, and Luxembourg.
4. Celtic peoples: Celtic people are found in Ireland, Scotland, Wales, Cornwall, and Isle of Man.
5. Finno-Ugric peoples: This group includes people from Finland, Estonia, and Hungary, as well as some regions in Russia.
6. Jewish people: Jewish communities are found throughout Europe, with significant populations in countries like France, Germany, United Kingdom, and Russia.
7. Romani people: Also known as gypsies or Roma people, they are found throughout Europe, with concentrations in countries like Romania, Spain, and Hungary.
8. Albanians: Albanians are mainly located in Albania and neighboring regions.
9. Greeks: Greek people are predominantly found in Greece, with minority communities in Cyprus and other countries.
10. Turks: While most of the Turkish population is in Turkey, there are large Turkish communities in European countries such as Germany and the Netherlands.
As for religion, the most prevalent religions in Europe are Christianity (both Roman Catholicism and Protestantism) and Islam. Eastern Orthodox Christianity is widespread in Eastern Europe, particularly in countries like Russia, Greece, and Serbia. Judaism is also a significant religion in Europe, with communities in many countries. Smaller religious groups include Hinduism, Buddhism, and various Neopagan religions.