Smoking at Narita Airport is prohibited both inside and outside the passenger terminals to eliminate the possible effects of “secondhand smoke” except in designated smoking areas. However, there are 14 smoking areas at Terminal 1 and 19 areas at Terminal 2
Terminal 1 (Maps Down Below)
1F – Outside South Exit S1 and S2, North Exit N1 and N2, Central Exit C1
1F – Inside Near Plant and Animal Quarantine
3F – Near Gates 57A/57B, 46, 42, 35, 26, 11A/11B
3F – After security checkpoint for connecting passengers
4F – Outside near North Exit N4, South Exit S3, Central Exit C1
4F – Outside near South Exit S3
4F – Near Checkin Counters A and H
4F – In Restaurant Areas behind Post Office and Near Laox
5F – Near Kaisen Misakiko and Williams (Either side of the building)
Terminal 2 (Maps Down Below)
1F – Outside North Exit 3, Central Exit and South Exit 2
1F – Near Seino Customs Clearance Service
2F – Near Walkways Entrance to Parking Lot North 2F and Parking Lot South 2F
3F – Outside between Between North Exit 1 and Central Exit and South Exit 1
4F – Near entrance to Observation Deck North and South
Terminal 1 Maps
Terminal 2 Maps
Official floor maps can be downloaded from here.