Sweden has a long history of development cooperation with Mozambique. You can read more about it here.
As it is the Mozambican Embassy in Stockholm that handles visa requests to Mozambique for Swedish citizens, we advice you to contact them. You can find their website here.
As a Swedish citizen to get married in Mozambique with a Mozambican citizen, one need to get a marriage license and a birth certificate in English. This can be obtain from the Swedish Tax Agency upon request. These documents then has to be legalized by the Swedish Embassy in Maputo, translated into Portuguese by an authorized translator in Mozambique and authorized by Mozambican authorities. We suggest that you contact the Conservatoria do Registro Civil for further assistance regarding the matrimony.
If you are not an EU-citizen and want to visit Sweden you might need a visa. Visa is required for citizens from these countries.
For a visa to Sweden, contact the French Embassy in Maputo, as they handle visas to sweden.
Embaixada de França Av. Julius Nyerere 2361 Maputo, Mozambique
Tel: +258 21 48 46 00, Fax: +258 21 48 46 80