South Trøndelag; Southern Sami: Åarjel-Tröndelaage) is one of the 19 multi-member constituencies of the Storting, the national legislature of Norway.

It consists of the municipalities of Åfjord, Frøya, Heim, Hitra, Holtålen, Indre Fosen, Malvik, Melhus, Midtre Gauldal, Oppdal, Orkland, Ørland, Osen, Rennebu, Rindal, Røros, Selbu, Skaun, Trondheim and Tydal in the county of Trøndelag.

The constituency currently elects nine of the 169 members of the Storting using the open party-list proportional representation electoral system.

Sør-Trøndelag currently elects nine of the 169 members of the Storting using the open[a] party-list proportional representation electoral system.

Results of the 2021 parliamentary election held on 13 September 2021:[13] The following candidates were elected:[14] Jorodd Asphjell (Ap); Sivert Bjørnstad (FrP); Heidi Greni (Sp); Lars Haltbrekken (SV); Eva Kristin Hansen (Ap); Linda Cathrine Hofstad Helleland (H); Kirsti Leirtrø (Ap); Mari Holm Lønseth (H); Ola Borten Moe (Sp); and Hege Bae Nyholt (R).

Results of the 1927 parliamentary election held on 17 October 1927:[94][95] The following candidates were elected:[94] Martin Handberg (Bp); Peder Næsset (Bp); Johan Nygaardsvold (Ap); Svend Larsen Skaardal (Ap); Johan Sedelen Stinessen (V); and John Wolden (V).

Results of the 1924 parliamentary election held on 21 October 1924:[96][97] The following candidates were elected:[96] Johannes Berg (H-FV); Ingebrigt Ingebrigtsen Huus (Bp); Johan Nygaardsvold (Ap); Benjamin Olsen Schei (V); Svend Larsen Skaardal (Ap); and John Wolden (V).

Results of the 1921 parliamentary election held on 24 October 1921:[98][99] The following candidates were elected:[98] Johannes Berg (H-FV); Ingebrigt Ingebrigtsen Huus (L); Johan Nygaardsvold (Ap); Benjamin Olsen Schei (V); Svend Larsen Skaardal (Ap); and John Wolden (V).