Smart tag may refer to:

• SMART tag™, a student transportation system

• Smart Tag, a Virginia toll collection system

• SmartTAG, a Malaysian toll collection system

• Smart tag (Microsoft), a search feature in Microsoft software

• Smart label, a type of radio-frequency identification (RFID) transponder

• Smart Tag, a component of the Wheels of Zeus GPS-tracking system

• Samsung Galaxy SmartTag, a key finder