If you have a Swedish official or diplomatic passport, you don't need visa to enter Argentina in any case.
If you have an official or diplomatic passport issued by a State or territory other than Sweden, please check here if you need Argentine visa.
When you travel to Argentina without visa, it is required that your passport be valid on arrival in Argentina. It is necessary that your passport is valid for at least 6 months beyond the arrival date.
This rule applies to Swedish official or diplomatic passports as well as to official or diplomatic passports issued by another State or territory, as long as they are also exempted from visa.
If you need visa, please contact the Embassy's Consular Department: consulares_esuec@mrecic.gov.ar.