Žemaitis is the masculine form of a Lithuanian family name. The name means "Samogitian" in Lithuanian. Its feminine forms are: Žemaitienė (married woman or widow) and Žemaitytė (unmarried woman).
The surname may refer to:
Jonas Žemaitis, namesake of the General Jonas Žemaitis Military Academy of LithuaniaFeliksas Baltušis-Žemaitis, Lithuanian army brigade general and Red Army major generalAlan Zemaitis, American football cornerbackTony Zemaitis, guitar maker from EnglandViktorija Žemaitytė, Lithuanian female Olympic athleteZita Žemaitytė, art critic, recipient of the Lithuanian National Prize