Stepanóvich (Russian, Belarusian) or Stepanovych (Ukrainian) is an East Slavic-language surname.
It corresponds to Lithuanian Steponavicius and South Slavic Stepanović. It is a patronymic surname is derived from the name Stepán.
It should not be confused with the patronymic "Stepánovich". The two differ in pronunciation: the surname has an accent on the third syllable (second from the end), while the patronymic has an accent on the second syllable (as in the name "Stepán").