Princess Grace was buried in the Grimaldi family vault on September 18, 1982, after a requiem mass in Saint Nicholas Cathedral, Monaco. Prince Rainier, who never remarried after Kelly's death, was buried alongside her following his death in 2005. The 400 guests at the service included representatives of foreign governments and of present and past European royal houses, as well as several veteran US film stars. Nearly 100 million people worldwide watched her funeral.

In his eulogy, James Stewart said: "You know, I just love Grace Kelly. Not because she was a princess, not because she was an actress, not because she was my friend, but because she was just about the nicest lady I ever met. Grace brought into my life as she brought into yours, a soft, warm light every time I saw her, and every time I saw her was a holiday of its own. No question, I'll miss her, we'll all miss her, God bless you, Princess Grace."