Surname アレクセイ (Алексей 
, Alexey 
, Alexei 
, along with others...) , all over the world, is a common last name. The family name アレクセイ is characteristic of Kyrgyzstan, where it is quite a common surname, Moldova, and Belarus (explore the name in all countries). In absolute terms, it is the most numerous in Russia, Kyrgyzstan, and Belarus. Predominantly, アレクセイ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Алексей | Kazakhstan, Belarus, Kyrgyzstan, Russia, Ukraine |
| Aleksei, Alexey, Aleksey | Moldova, Belarus, United States, Russia, Uzbekistan |
| Alexei | Moldova, Israel, Belarus, United States, Russia |
| Alexej | Belarus, United States, Germany, Russia, Uzbekistan |
| アレクセイ | Japan |
Alaksiej, Aleix, Aleixo, Alejo, Aleksas, Aleksej, Aleksejs, Alekseï, Aleksi, Aleksiej, Aleksij, Aleksis, Aleksy, Alekszej, Alekséi, Alessio, Alexeï, Alexis, Alexius, Alexéi, Aliaksei, Aliaksiej, Aljaksej, Alyaksey, Arekusei, Oleksa, Oleksi, Oleksii, Oleksij, Oleksiy, Olekszij, Olexa, Olexii, Olexij, Olexiy, Αλέξης, Алейс, Алексе'Й, Алексейс, Алекси, Алексий, Алексис, Алексы, Алексіс, Алесио, Алессио, Алехо, Алеш, Аляксей, Алёша, Алёшка, Лёха, Лёша, Олекса, Олексий, Олексій, אלכסיי, אלכסיס, ألكسيس, أليكسي, اليكسي, ალექსი, アレクシ, アレクシス, and アレクシー