The Nigerian admitted that the former Real Madrid player who led Milan to the 2007 UEFA Champions League title was the player he looked up to during his teenage years.
Ndidi has played 12 games since joining the Foxes from Gent in January and scoring just once in a Cup game against Derby County.
"My football hero is Kaka," Ndidi told LCFC TV.
“I love the way he played, his kind of techniques, goals scored. Actually when I was young, I watched him, though I never had the experience of who Kaka was, I only heard about Kaka scoring goals, so I just loved him.
“When Kaka moved to (Real) Madrid, I also followed him. Even though he was not playing so much. I just loved the way he was calm, his moves when he played."