1951–52 Landsdelsserien

The 1951–52 Landsdelsserien was a Norwegian second-tier football league season, the first named Landsdelsserien.

The league was contested by 54 teams, divided into a total of seven groups from four districts; Østland/Søndre, Østland/Nordre, Sørland/Vestland and Møre/Trøndelag. The two group winners in the Østland districts, Larvik Turn and Lillestrøm promoted directly to the 1952–53 Hovedserien. The other five group winners qualified for promotion play-offs to compete for two spots in the following season's top flight. Varegg and Ranheim won the play-offs and were promoted.

Promotion play-offs

 * Sørland/Vestland
 * Results A1–A2
 * Ålgård 2–0 Flekkefjord
 * Results A–B
 * Varegg 2–2 (a.e.t.) Ålgård
 * Varegg 2–1 Ålgård

Varegg won 2–1 over Ålgård and were promoted to Hovedserien.


 * Møre/Trøndelag
 * Ranheim 2–0 Hødd

Ranheim won 2–0 over Hødd and were promoted to Hovedserien.