Gardermoen has a single terminal building — Avinor’s own map page calls it "the terminal", not "terminals" — with domestic gates A, B and C and international gates D, E and F. The shaded outline on the map is that building; the smaller shape to its west is a named annex OpenStreetMap traces separately, matching the "south pier" that Avinor mentions when it explains how the seasonal G-gates (G1–G8) borrow domestic gates for peak summer traffic. Oslo Airport is Flytoget’s terminus and the same station where Vy trains stop — the difference is the operator, not the building. The 2017 expansion nearly doubled the building and renamed the gates, so any older map still showing the pre-2017 layout is out of date.
The shaded buildings are the terminals as they operate today, with names verified by us — the base map’s own labels can lag behind reality. Blue P squares mark the official car parks that publish a name; the dark square is the station.
Terminal areas and names verified by us. Base map data © OpenStreetMap contributors.
More detail: Terminal guide · Parking · Getting to and from the airport