Semigallia (Latvian: Zemgale; Russian: Земгале) is one of the five multi-member constituencies of the Saeima, the national legislature of Latvia.

The constituency currently elects 13 of the 100 members of the Saeima using the open party-list proportional representation electoral system.

Semigallia currently elects 13 of the 100 members of the Saeima using the open party-list proportional representation electoral system.

[4][5] Constituency seats are allocated using the Sainte-Laguë method.

[6][7] Only parties that reach the 5% national threshold compete for constituency seats (4% in 1993).