Ferdinand, who is married with three children, claims the paper violated his privacy by publishing the story. The court ruled that the importance to the public's interest trumped the player's right to privacy in this case.
Ferdinand was named England captain ahead of the 2010 World Cup after allegations of an extra-marital affair led manager Fabio Capello to strip John Terry of the role.
Sunday Mirror editor Tina Weaver issued a statement saying, "The judge found that there was a justified public interest in reporting the off-pitch behavior of the then England captain and discussion of his suitability for such an important and ambassadorial role representing the country."
Ferdinand has battled injuries in recent months and has played a minor role in Manchester United's first months of the season.
