The Ligue 1 leaders have denied speculation they are preparing a big-money move for the prolific attacker in an attempt to lure him away from his current club
La Gazzetta dello Sport suggested earlier this week that the capital club have set their sights on the Portugal international and were willing to pay up to €100 million (£80m) for the forward, but Al-Khelaifi has made it clear there is no truth in the report.
"Cristiano Ronaldo is a great player, but he's under contract with Real Madrid. I have not spoken with anyone at Madrid," the PSG president was quoted as saying by AFP.
Les Parisiens were previously linked with the former Manchester United man after the 27-year-old revealed his unhappiness with life at Madrid earlier this season, but Al-Khelaifi then denied any concrete interest in the player.
Ronaldo has a contract with Los Blancos until the summer of 2015.