Suica is a contactless smart card used in Japan.
Suica, Šuica or Șuica can also refer to:
Persons Dubravka Šuica
Places Šujica, Dobrova–Polhov Gradec, a village in Slovenia Šuica, Bosnia and Herzegovina Șuica, a village in the commune Scornicești, Olt County, Romania
Rivers Šuica (river), Bosnia and Herzegovina Șuica, a tributary of the Negrișoara in Olt County, Romania