An Airport Transit Visa (ATV), commonly known as a Schengen transit visa, is a specific document that allows travelers from certain non-EU countries to pass through the international transit zone of an airport in a Schengen country without actually entering the Schengen national territory. In 2026, this is primarily required for citizens of countries like Afghanistan, Eritrea, Ethiopia, Ghana, Iran, Iraq, Nigeria, Pakistan, Somalia, Sri Lanka, and the DRC. If you have this visa, you can stay in the airport's "airside" area to wait for your connecting flight to a non-Schengen destination. It is important to note that an ATV does not allow you to leave the airport, stay in a hotel outside the transit zone, or clear immigration to collect and re-check luggage. If your connection requires you to change airports (e.g., from Paris Orly to Charles de Gaulle) or if you are staying overnight in a hotel outside the terminal, you must instead apply for a standard "Schengen C-Type" short-stay visa. Always check the specific requirements of the country you are transiting through, as some nations have additional "national" transit visa lists.