1940s
- 1940 - Lisbon, Portugal - Exposição do Mundo Português (1940)
- 1940 - Los Angeles, United States - Pacific Mercado (1940) (never held)
- 1940 - Naples, Italy - Mostra Triennale delle Terre Italiane d’Oltremare (Triennial Exhibition of Overseas Italian Territories)
- 1940 - Tokyo, Japan - Grand International Exposition of Japan (1940) (never held)
- 1942 - Los Angeles, United States - Cabrillo Fair (1942) (never held)
- 1942 - Rome, Italy - Esposizione universale (1942) (E42) (never held)
- 1947 - Paris, France
- 1948 - Brussels, Belgium - Foire coloniale (1948)
- 1949 - Stockholm, Sweden - Universal Sport Exhibition
- 1949 - Lyon, France
- 1949-1950 - Port-au-Prince, Haiti - Exposition internationale du bicentenaire de Port-au-Prince
- 1953 - St Louis, United States - intended to commemorate the Louisiana Purchase's sesquicentennial, but never held
Read more about this topic: List Of World's Fairs