The playmaker has been linked with moves away from the Giuseppe Meazza for at least two years and last summer was involved in an almost endless transfer saga with Manchester United.
Real are the latest to be linked with Sneijder, who they sold to Inter in 2009 after the Holland international struggled in a two-year spell at the Bernabeu.
Jose Mourinho is known to be in the market for a creative midfielder and reports have suggested Real are becoming frustrated in their pursuit of Luka Modric.
Sneijder would be an alternative but his agent insists there have not been any talks, as Soren Lerby told calciomercato.com: “I have not had any contact with Real Madrid.
“I have no idea whether they have spoken with Inter Milan. You should ask them.”
Inter coach Andrea Stramaccioni earlier in July revealed no player is indispensable and said the club would listen to big-money offers for their top stars, which includes Sneijder.
The 28-year-old, who is under contract until 2015, has also been linked with mega-rich Anzhi Makhachkala but has maintained he is committed to Inter.
But asked whether Sneijder will definitely remain at Inter, Lerby said: “As you know in football. Anything can happen.”