The movies that have won 6 Oscar Awards or more. I have listed the won Oscars and the other nominations. Note that when there are no nominations listed, there aren't any.
Some other info:
The 5 most important Oscars are Best Picture, Best Director, Best Actor, Best Actress and Best Screenplay. Only three movies have been awarded with all of these awards: It Happened One Night (1934), One Flew Over the Cuckoo's Nest (1975) and The Silence of the Lambs (1991).
The most successful movie series are The Lord of the Rings (2001-2003, 17 Oscars), Godfather (1972-1990, 9 Oscars) and Star Wars (original trilogy 1977-1983, 7 Oscars).
The list might be uncomplete. Please message me or comment about it here so I can improve the list.