1931-1940: áratugur
1931–1940 var 4.
áratugur 20. aldar.
| Árþúsund: | 2. árþúsundið |
| Öld: | 19. öldin · 20. öldin · 21. öldin |
| Áratugir: | 1911–1920 · 1921–1930 · 1931–1940 · 1941–1950 · 1951–1960 |
| Ár: | 1931 · 1932 · 1933 · 1934 · 1935 · 1936 · 1937 · 1938 · 1939 · 1940 |
| Flokkar: | Fædd · Dáin · Stofnað · Lagt niður |
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