The Diet of Finland (Finnish Suomen maapäivät, later valtiopäivät; Swedish Finlands Lantdagar), was the legislative assembly of the Grand Duchy of Finland from 1809 to 1906 and the recipient of the powers of the Swedish Riksdag of the Estates. (The term valtiopäivät today means an annual session of the Parliament of Finland, while in Swedish Riksdagen is now the name for both the Parliament and its sessions.)