Visa is required for citizens of Austria to visit Vietnam. Austrian nationals may have 2 options: Visit Vietnam embassy in Austria (Vienna) or apply for a visa on arrival to Vietnam from Austria online. Austrian citizens may apply for both tourist and business visa to Vietnam for the stay of 1 to 6 months from Austria. Please check this link for visa fee for Austrian citizens.

All the information for getting a visa from Vietnam embassy in Austria can be found here: http://www.vietnamembassy-austria.org/