The comedy actor - best known for his role in movies `Airplane!` and the `Naked Gun` series - died in his sleep on 28.11.10 as a result of complications from pneumonia in Ford Lauderdale, Florida.
His agent John S. Kelly confirmed the star`s passing in a statement which also paid tribute to his lengthy career.
He said: "We are saddened by the passing of beloved actor Leslie Nielson, probably best remembered as Lt. Frank Drebin in `The Naked Gun` series of pictures, but who enjoyed a more than 60-year career in motion pictures and television."
His nephew Doug told radio station CJOB the actor was a "very caring" man who he would miss "greatly"
He said: "He just fell asleep and passed away. He was a truly nice man. A very caring, naturally funny guy in day-to-day life, not just because someone wrote something on paper for me.
"He was a very tender-hearted man. He was one of my best friends and I loved him dearly. I`ll miss him greatly."
Canadian-born Leslie appeared in a number of big movies before his break into comedy, including sci-fi epic `Forbidden Planet` and `The Poseidon Adventure` in 1972.
He was married four times and is survived by his last wife Barbaree Earl and two children from his second marriage to Alisande Ullman, Maura and Thea.