| Alsunga | |
| Other Name: | Alšvanga |
| Settlement Type: | Village |
| Subdivision Type: | Country |
| Subdivision Name: |  Latvia |
| Subdivision Type1: | Municipality |
| Subdivision Name1: | Kuldīga Municipality |
| Established Title: | First mentioned in |
| Established Date: | 1230 |
| Pushpin Map: | Latvia |
| Pushpin Label Position: | above |
| Pushpin Mapsize: | 300 |
| Pushpin Map Caption: | Location in Latvia |
| Coordinates: | 56.9833°N 55°W |
| Leader Title: | Mayor |
| Leader Name: | Daiga Kalnina |
| Blank Name Sec1: | Number of city council members |
| Blank Info Sec1: | 13 |
| Population Total: | 1345 |
| Postal Code Type: | Postal code |
| Postal Code: | LV-3306 |
| Area Code Type: | Calling code |
| Area Code: | +371 6335 |
| Timezone1: | EET |
| Utc Offset1: | +2 |
| Timezone1 Dst: | EEST |
| Utc Offset1 Dst: | +3 |
| Website: | www.alsunga.lv |
Alsunga (also Alšvanga, German: Alschwangen) is a village in Alsunga Parish, Kuldīga Municipality in the Courland region of Latvia. Alsunga is the center of the Suiti, a small Catholic community in the Lutheran western part of Latvia.[1] There are approximately 1345 inhabitants in Alsunga.
Alsunga was first mentioned in 1230, as an old settlement of Curonians with Curonian name and typical suffix -anga- (comp. Alšvanga, Palanga). In 1372, a castle was built for the vogt of Kuldīga komtur. In 1561 Alsunga became the part of the predominantly Lutheran Duchy of Courland and Semigallia. In 1567, the Saint Michael church was built. In 1623, the local landowner, Johan Ulrich von Schwerin, in order to marry a Catholic court lady Barbara Konarska from Vilnius, agreed to himself become Catholic. After the marriage he lived in Lithuania and Poland until 1632, when he returned to Alsunga after his father's death. In 1634, Johan Ulrich invited Jesuits to establish a mission in Alsunga to help him transfer all his peasants to Catholic faith.
On October 1, 2009, the Suiti cultural space was included in the UNESCO List of Intangible Cultural Heritage in Need of Urgent Safeguarding.[2]