Basanavičius is the masculine form of a Lithuanian family name. Its feminine forms are: Basanavičienė (married woman or widow) and Basanavičiūtė (unmarried woman). The polish-language equivalent is Basanowicz.
The surname may refer to:
Jonas Basanavičius, Lithuanian political activist, proponent of Lithuania's National Revival movement Vincas Basanavičius, Lithuanian folklorist