Trolle (sometimes in Danish Trold) is the name of a noble family, originally from Sweden. The family has produced prominent people in the histories of Denmark and in Sweden since the Middle Ages and is associated with several estates in Sweden. 
Their historically attested male-line ancestors are known as far back as the 14th century. The earliest historical ancestor was the knight Birger Knutsson, also known as Birghe Trulle. The earliest known generations held the estate of Bo in Smaland, Sweden. Birger Birgersson, High Councillor of Sweden (d 1471), inherited Bergkvara castle from his half-brother.
Arvid Birgersson and Eric Arvidsson were among mightiest in the country and both almost became Regents of Sweden in their time, in competition against the Sture family. Gustav Trolle was Archbishop of Uppsala. The original Swedish line of the family died out in the late 16th century.
Eric's younger half-brother Joachim (d 1546) had inherited Lilloe in Skåne from his mother and settled in Denmark. The Danish family line continued through his relatives, becoming an important house of high nobility. One of his sons was Danish admiral Herluf Trolle and one of great-grandsons Niels Trolle (Nils Trolle til Trollesholm og Gavnø) was Statholder of Norway.
Sweden again got a branch of the family when Niels Trolle's son Arvid Nielsen Trold, Lord of Trollenäs Castle, swore loyalty to Sweden (and was in 1689 given the seat among Sweden's nobility) after Skåne, his native land, had become a permanent part of Sweden. The head of the house received in 1816 the primogeniturally hereditary title of baron in Sweden for the House. All currently extant branches of the House of Trolle descend from him, the remaining Danish branches are still alive and can be found in Denmark.
Coat of arms
The family name comes from the family coat of arms that depicts a headless troll. According to tradition, the family had taken these arms on the basis of a legend that a common ancestor must have killed a troll and robbed a drinking horn, which was called Våxtorpshornet el.
Prominent family members
- Eric Trolle (c. 1460–1530), Swedish Lord High Constable
- Gustav Trolle (1488–1535), Archbishop of Uppsala
- Herluf Trolle (1516–1565), Danish naval hero
- Frederik Trolle (1693-1770) Owner of Trolleholms Castle
- Nils Axel Arvid Carlsson Trolle (1859-1930, Baron of Trollenäs Castle
- Orvar Trolle (1900–1971), Swedish freestyle swimmer
- Ane Trolle (born 1979), Danish singer and songwriter
- Ulf Trolle Managing Director of Trollenäs Gods AB