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