Stjernarp, Manor house in Halmstad Municipality, Sweden.

Stjernarp is a manor house in Eldsberga parish, Halmstad Municipality, whose main building was erected by Anders Jöran Hammar after he bought the estate in 1813. The estate lies in Tönnersjö hundred, Halland, and its grounds were once worked with a mill, a brickworks and a distillery. All the estate's farm buildings burned down in 1921.

Queen Kristina's court councillor Johan Silfverstjerna bought the estate Klastrup in 1651; after lightning burned it in 1653 he built a new main farm nearby called Stjernerup, later Stjernarp. Anders Jöran Hammar, who bought it in 1813, raised the present main building. From 1852 David Erik Stierncrona held it as a fideikommiss transferred from Åkeshov Castle; this ended in 1927, and the estate passed by inheritance to the Hamelin and later Hamilton families.

The estate's name traces back to Johan Silfverstjerna, who called his new farm Stjernerup after lightning destroyed the earlier Klastrup in 1653; this became Stjernarp. Ownership passed by marriage and inheritance through the Cederkrantz, Stierncrona and Hermelin families, and Stjernarp now belongs to the Hamilton family. The former fideikommiss was dissolved in 1927.

Stjernarp lies in Eldsberga socken, Halmstad Municipality, near the Tönnersjö district. The estate is private and still farmed, with its land worked by GodsGrannarna, a company co-owned with Sperlingsholm. Halmstad's expanding waste-handling and industrial areas now press close to the grounds, so expect a working landscape rather than a visitor site.

The estate's name shifted from Klastrup to Stjernerup and then Stjernarp after lightning burned the original main building in 1653. From 1851 to 1927 it was a fideikommiss, an entailed estate, a right transferred from Åkeshov Castle in Uppland. The last holder died unmarried in 1927.