NJF:s congresses are generally held every third year.

1st                       Copenhagen, 1921

2nd                     Gothenburg, 1923

3rd                      Oslo, 1926

4th                      Helsingfors, 1929

5th                      Copenhagen, 1935

6th                      Uppsala, 1938

7th                      Oslo, 1947

8th                      Helsingfors, 1950

9th                      Copenhagen 1953

10th                    Stockholm, 1956

11th                    Oslo, 1959

12th                    Helsingfors, 1963

13th                    Copenhagen, 1967

14th                    Uppsala, 1971

15th                    Reykjavik, Iceland, 1975

16th                    Oslo, Norway, 1979

17th                    Helsingfors, Finland, 1983

18th                    Århus, Denmark, 1987            

19th                    Uppsala, Sweden, 1991

20th                   Reykjavik, Iceland, 1995

21st                     Ås, Norway, 1999

22nd                   Turkku, Finland, 2003

23rd                    Copenhagen, 2007

24th                    Uppsala, Sweden, 2011

25th                    Riga, Latvia, 2015

26th                    Kaunas, Lithuania, 2018