From Spain, visitors can apply for a visa through one of the embassy of Vietnam in Spain below or apply for a Vietnam visa  online. Here below is the specific address of Vietnam Embassy you may concern:

Embassy of Vietnam in Madrid – Spain
C/ Arturo Soria 201, 1-AyB 28043 – Madrid, Spain
Tel: (3491) 510 2867
Fax: (3491) 415 7067

Besides, citizens in Spain can select among 3 options to get visa to Vietnam:

–          Visit Vietnam Embassy in Spain or in any other countries to get Vietnam visa done there.

–          Apply for Vietnam visa on arrival at https://vietnamvisaonentry.com/apply-online/ and pick up your visa at one of 3 international airports in Vietnam

–          Apply for Vietnam visa code at https://vietnamvisaonentry.com/apply-online/ and get visa stamped at Vietnam Embassy where you wish to pay a visit to.