Häme (Swedish: Tavastland; also known as Tavastia) is one of the 13 electoral districts of the Parliament of Finland, the national legislature of Finland. The district was established as Häme Province South (Finnish: Hämeen läänin eteläinen; Swedish: Tavastehus läns södra) in 1907 when the Diet of Finland was replaced by the Parliament of Finland. It was renamed Häme in 1997. It is conterminous with the regions of Kanta-Häme and Päijät-Häme. The district currently elects 14 of the 200 members of the Parliament of Finland using the open party-list proportional representation electoral system. At the 2023 parliamentary election it had 310,047 registered electors.

Häme Province South was one 16 electoral districts established by the Election Act of the Grand Duchy of Finland (Suomen Suuriruhtinaanmaan Vaalilaki) passed by the Diet of Finland in 1906.^[4] It consisted of the hundreds (kihlakunta) of Hauho, Hollola and Tammela in the province of Häme.^[4] Viiala municipality was transferred from Häme Province North to Häme Province South in 1951.^[5] In 1990, the municipalities of Kylmäkoski, Toijala, Valkeakoski and Viiala were transferred from Häme Province South to Häme Province North and Somero municipality was transferred from Häme Province South to Turku Province South.^[6][7] The district was renamed Häme in 1997.^[8][9]

In 1998, the municipalities of Hartola, Heinola and Sysmä were transferred from Mikkeli to Häme and the municipalities of Artjärvi and Orimattila were transferred from Uusimaa to Häme.^[6] At the same time, Urjala municipality was transferred from Häme to Pirkanmaa.^[6] Iitti municipality was transferred from Southeast Finland to Häme in 2021.^[10]

Häme currently elects 14 of the 200 members of the Parliament of Finland using the open party-list proportional representation electoral system.^[11][12] Parties may form electoral alliances with each other to pool their votes and increase their chances of winning seats.^[13][14] However, the number of candidates nominated by an electoral alliance may not exceed the maximum number of candidates that a single party may nominate.^[15] Seats are allocated using the D'Hondt method.^[16][17]