Vietnamese passport with US green Card. Flying to Vietnam on February 2023. Do I need a transit visa if my layover is 2 hour at the NARITA/Japan Airport
If you have your flight under a single ticket/PNR :
TIMATIC states :
Japan - Transit Visa
TWOV (Transit Without Visa)
Passengers with a confirmed onward ticket for a flight to a third country on the same calendar day. They must stay in the international transit area of the airport and have documents required for the next destination.
Else you will need a visa