| Native Name: | Księstwo rawskie (Polish) Ducatus Ravensis (Latin) |
| Conventional Long Name: | Duchy of Rawa |
| Era: | High Middle Ages |
| Status: | Fiefdom within the Kingdom of Poland (1310–1320) Fiefdom of the United Kingdom of Poland (1320–1385) Fiefdom of the Crown of the Kingdom of Poland (1386–1442) |
| Government Type: | Feudal duchy |
| Life Span: | 1313–1370 1381–1442 |
| Event Start: | Partition of the Duchy of Płock |
| Date Start: | 1313 |
| Event1: | Unification of the Duchy of Masovia |
| Date Event1: | 5 November 1370 |
| Event2: | Partition of the Duchy of Masovia |
| Date Event2: | June 1381 |
| Event End: | Incorporation into the Duchy of Płock |
| Date End: | 1442 |
| P1: | Duchy of Płock |
| Flag P1: | Chorągiew księcia mazowieckiego Siemowita.svg |
| Border P1: | no |
| P2: | Duchy of Masovia |
| Flag P2: | Chorągiew księcia mazowieckiego Siemowita.svg |
| Border P2: | no |
| S1: | Duchy of Masovia |
| Flag S1: | Chorągiew księcia mazowieckiego Siemowita.svg |
| Border S1: | no |
| S2: | Duchy of Płock |
| Flag S2: | Chorągiew księcia mazowieckiego Siemowita.svg |
| Border S2: | no |
| Religion: | Roman Catholic |
| Flag Border: | no |
| Image Map Caption: | The map of the political division of Masovia between 1381 and 1426, including the Duchy of Rawa. |
| Capital: | Rawa |
| Official Languages: | Polish, Latin |
| Title Leader: | Duke |
| Leader1: | Siemowit II of Masovia |
| Year Leader1: | 1313–1345 (first of the first state) |
| Leader2: | Siemowit III |
| Year Leader2: | 1341–1370 (last of the second state) |
| Leader3: | Siemowit IV |
| Year Leader3: | 1381–1426 (first of the second state) |
| Leader4: | Siemowit V of Masovia |
| Year Leader4: | 1426–1442 (last of the second state) |
The Duchy of Rawa was a feudal district duchy in Masovia, centered on the Rawa Land. Its capital was Rawa. It existed during the High Middle Ages era, from 1313 to 1370, and from 1381 to 1442.
The state was established in April 1313, in the partition of the Duchy of Płock, with duke Siemowit II of Masovia becoming its first leader.[1] It existed until 5 November 1370, when, under the rule of duke Siemowit III, duchies of Czersk, Rawa, and Warsaw were unified into the Duchy of Masovia.[2] [3] It was again reestablished in June 1381, in the partition of the Duchy of Masovia, with duke Siemowit IV as its first leader.[4] [5] [6] It existed until 1488, when it got incorporated into the Duchy of Czersk.[7]
From 1310 to 1320, it was a fiefdom within the Kingdom of Poland, and from 1320 to 1385, a fiefdom of the United Kingdom of Poland, and from 1386 to 1442, a fiefdom of the Crown of the Kingdom of Poland.