Surname Aleksij (Алексий 
, Алексій 
, Aleksij 
) , globally, is a rare last name. The family name Aleksij is habitual in Ukraine, where it is a rare surname, Russia, where it is a very rare surname, and Kyrgyzstan. Measured by absolute frequency, this name is the most popular in Ukraine, Russia, and Kazakhstan. More frequently, Aleksij is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Алексий | Kyrgyzstan, Kazakhstan, Russia |
| Алексій | Ukraine |
| Aleksij | United Kingdom, Italy, Croatia, Slovenia, United States |
Aleix, Alejo, Aleksei, Aleksej, Aleksejs, Aleksey, Alekseï, Aleksi, Aleksiej, Aleksy, Alekszej, Alekséi, Alessio, Alexei, Alexej, Alexey, Alexeï, Alexius, Alexéi, Oleksa, Oleksi, Oleksii, Oleksij, Oleksiy, Olekszij, Olexa, Olexii, Olexij, Olexiy, Алейс, Алексе'Й, Алексей, Алексейс, Алекси, Алексы, Алесио, Алессио, Алехо, Алеш, Аляксей, Алёша, Алёшка, Лёха, Лёша, Олекса, Олексий, Олексій, אלכסיי, أليكسي, اليكسي, ალექსი, アレクシー, and アレクセイ