This list charts films the 50 biggest worldwide openings. Since many films do not open on Fridays in many markets, the 'opening' is taken to be the
gross between the first day of release and the first Sunday following the movie's release. Figures prior to the year 2002 are not available. Since many American films do not open in all markets at the same time, the 'opening' gross varies depending on when it was released in the US-Canada market. For example, for films like
Harry Potter and the Deathly Hallows – Part 2 and
Batman v Superman: Dawn of Justice which opened in the US-Canada market and in most other major markets during the same weekend, the 'opening' is the total gross of the film during that weekend. On the other hand, for films like
Avengers: Age of Ultron and
Captain America: Civil War which opened in several markets a week ahead of their respective releases in the US-Canada market, the 'opening' is the sum of the opening grosses in the markets where they were released first and the opening in the US-Canada market. In the latter case, the opening grosses from territories after the initial overseas opening are not included in the 'opening' of the film. In all cases, if a film opens in a market after its release in the US-Canada market, that opening is not included in the 'opening' of the film. ==Individual country records==