Disney’s animated movie Frozen was second on the list, said The Hollywood Reporter, quoting piracy-tracking company Excipio.
The Wolf of Wall Street and Frozen were downloaded around 30 million times by torrent users between January 1 and December 23, 2014.
The third most-pirated film was Gravity.
The space thriller was just behind Frozen with 29.357 million downloads.
The Wolf of Wall Street, which stars Leonardo DiCaprio as real-life stockbroker Jordan Belfort, caused controversy when it was released in the US.
The movie was nominated for best picture at the Oscars and contained more than 500 uses of the F-word in its almost three-hour running time.
Other Oscar nominees in the most-pirated top 20 included 12 Years a Slave, American Hustle and Captain Phillips.
According to The Hollywood Reporter, the biggest-grossing movie of the year, The Guardians of the Galaxy, was not on the list “perhaps because anyone interested in the film opted to see it in theaters”.
RoboCop went on No 3, but the figures included both MGM’s 2014 reboot as well as the original 1987 version.
Top 20 most illegally downloaded films in 2014:
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