What does Sergei mean?
How popular is Sergei?
Sergei is a rare given name for males. Sergei is also a unique last name for all people. (2000 U.S. Census)
Sergio (#307 2 years ago) is the only popular variation form of Sergei (not ranked). Other variants, like Sergius, are seldom used. This relation of Sergei reached the apex of its popularity in the year 1992 (#157) and is now much less common (#307, ▼17.8%). Below is a graphed analysis of the usage of the boy name Sergei and corresponding names. (Top 1000 Baby Names Statistics, 2014)
A recommended similar baby name is Sarge. Like Sergei, this name is not commonly used.