1956–57 Landsdelsserien

The 1956–57 Landsdelsserien was a Norwegian second-tier football league season.

The league was contested by 54 teams, divided into a total of seven groups from four districts; Østland/Søndre, Østland/Nordre, Sørland/Vestre and Møre/Trøndelag. The two group winners in the Østland districts, Eik and Raufoss promoted directly to the 1957–58 Hovedserien. The other five group winners qualified for promotion play-offs to compete for two spots in the following season's top flight. Brann and Molde won the play-offs and were promoted.

Promotion play-offs

 * Sørland/Vestland
 * Results A1–A2
 * Stavanger 4–1 Donn
 * Results A–B
 * Brann 4–1 Stavanger

Brann won 4–1 over Stavanger and were promoted to Hovedserien.


 * Møre/Trøndelag
 * Molde 0–1 Sverre
 * Sverre 2–5 Molde

Molde won 5–3 on aggregate and were promoted to Hovedserien.