| Native Name: | Księstwo świecko-lubiszewskie (Polish) |
| Conventional Long Name: | Duchy of Świecie and Lubiszewo |
| Era: | High Middle Ages |
| Government Type: | Duchy |
| Life Span: | 1227–1227/1233 |
| Year Start: | 1227 |
| Event Start: | Partition of the Duchy of Pomerelia |
| Event End: | Partition between duchies of Gdańsk, Lubiszewo and Białogarda |
| Year End: | 1227/1233 |
| P1: | Duchy of Eastern Pomerania |
| S1: | Duchy of Gdańsk |
| S2: | Duchy of Lubiszewo |
| S3: | Duchy of Białogarda |
| Religion: | Roman Catholic |
| Capital: | Świecie |
| Today: | Poland |
| Official Languages: | Polish, Latin |
| Title Leader: | Duke |
| Leader1: | Warcisław I of Świecie |
| Year Leader1: | 1227–1227/1233 |
Duchy of Świecie and Lubiszewo was a duchy in Pomerelia centred around Świecie and Lubiszewo. It was formed in 1227 from the partition of the Duchy of Pomerelia and existed until between 1227 and 1233 when it was partitioned between duchies of Gdańsk, Lubiszewo and Białogarda.[1] [2]
In 1227, after the death of Leszek the White, the High Duke of Poland, the Duchy of Pomerelia had achieved independence from the Kingdom of Poland. Following that, the duke of Pomerelia, Swietopelk II, had partitioned the county between himself and his brother, Warcisław I of Świecie, to whom he had given the Świecie and Lubiszewo. Wartisław I had died between 1227 and 1233. Following his death, his state was divided between Swietopelk II, who got the area of Świecie, Sambor II, who got the Duchy of Lubiszewo, and Racibor of Białogarda, who got Duchy of Białogarda.[1] [2]