I-L
| Name | Swedish name | Location | Date | Condition | Picture | Notes |
|---|---|---|---|---|---|---|
| Ismantorp Fortress | Ismantorps fornborg | Öland | 2nd century | Ruin | ||
| Johannisborg | Johannisborg | Östergötland | 1614 | Ruin | ||
| Johannishus Castle | Johannishus slott | Blekinge | 1670 | Private residence | ||
| Jordberga Castle | Jordberga slott | Scania | 1908 | Private residence | ||
| Kalmar Castle | Kalmar slott | Småland | 12th century | Museum | ||
| Karlberg Castle | Karlbergs slott | Stockholm | 1634 | School | ||
| Karlsborg Fortress | Karlsborgs fästning | Västergötland | 1819 | Museum | ||
| Kärnan | Kärnan | Scania | 11th century | Museum | ||
| Karsholm Castle | Karsholms slott | Scania | 1862 | Private residence | ||
| Kavlås Castle | Kavlås slott | Västergötland | 1775 | Private residence | ||
| Knutstorp Castle | Knutstorps borg | Scania | 14th century | Private residence | ||
| Koberg Castle | Koberg slott | Västergötland | 1632 | Private residence | ||
| Krageholm Castle | Krageholms slott | Scania | 1720s | Private residence | ||
| Krapperup Castle | Krapperups slott | Scania | 14th century | Private residence | ||
| Kristineberg Palace | Kristinebergs slott | Stockholm | 1750 | Private residence | ||
| Kronoberg Castle | Kronobergs slott | Småland | 1444 | Ruin | ||
| Kronovall Castle | Kronovalls slott | Scania | 1760 | Private residence | ||
| Kulla Gunnarstorp Castle | Kulla Gunnarstorps slott | Scania | 1854 | Private residence | ||
| Läckö Castle | Läckö slott | Västergötland | 1298 | Museum | ||
| Landskrona Citadel | Citadellet (Landskrona slott) |
Scania | 1559 | Museum | ||
| Leufsta | Lövstabruk | Uppland | 1601 | Museum | ||
| Lindholmen Castle | Lindholmens slott | Scania | 13th century | Ruin | ||
| Lindholmen Castle | Lindholmens slott | Västergötland | 1514 | Ruin | ||
| Lindholmen Fortress | Lindholmens borg | Gothenburg | 13th century | Ruin | ||
| Linköping Castle | Linköpings slott | Östergötland | 12th century | Museum | ||
| Ljung Castle | Ljungs slott | Östergötland | 1774 | Museum | ||
| Löberöd Castle | Löberöds slott | Scania | 1798 | Private residence | ||
| Löfstad Castle | Löfstads slott | Östergötland | 1660 | Museum |
Read more about this topic: List Of Castles And Manor Houses In Sweden