Steponavičius is a Lithuanian language family name. It corresponds to East-Slavic Stepanovich and South Slavic Stepanović. The surname is derived from the name Stepan.

Steponavičius
Lithuanian surname
m.:Steponavičius
f.: (unmarried)Steponavičiūtė
f.: (married)Steponavičienė

The surname may refer to: