Meaning & Origin
A transliteration of the Russian male given name Алексе́й (Alekséj), equivalent to Alexius.
Aleksey is a boy's and girl's baby name of Russian and Greek origin, the Russian transliteration of Alexei — from the Greek Alexios, meaning 'defender' or 'helper.' Several Russian tsars bore this name, including Tsar Alexei I and the ill-fated Tsarevich Alexei Romanov, son of Nicholas II — giving it a deeply historical Russian identity.