Sweden proper (Swedish: Egentliga Sverige) is a term used to distinguish those territories that were fully integrated into the Kingdom of Sweden, as opposed to the dominions and possessions of, or states in union with, Sweden.
Specifically this means that from approximately 1155–1156 up to the Treaty of Fredrikshamn in 1809, Sweden proper did also include the bulk of present-day Finland as a fully integrated part of the realm, Österland. After 1809 however the use of the term has been to distinguish the western part from former eastern half of the realm, or Sweden from Finland.
Sweden proper is, as opposed to Finland Proper, a geographical reference that has changed over time, whereas the latter is a province in southwestern Finland that gave its name to all of Finland.
- Jouko Vahtola (2003), History of Finland, ?
- Juan Pan-Montojo, Frederik Pedersen (2007). Communities in European history: representations, jurisdictions, conflicts. Edizioni Plus. p. 227. ISBN 88-8492-462-6.