His family announced that Sir Michael Gambon passed away at the age of 82.
The actor is best known for playing Professor Albus Dumbledore in six of the eight Harry Potter films.
Dublin, Ireland, is where Sir Michael was born.
He worked in TV, film, theatre, and radio during the course of his more than 50-year career.
His son Fergus and widow Anne Miller said that their devoted husband and father passed away quietly after developing pneumonia.
The actor is renowned for his portrayal of French investigator Jules Maigret in the Maigret television series.
In Dennis Potter's The Singing Detective, Philip Marlow, played by Sir Michael, will also be recalled.
He was a founding member of the London-based Royal National Theatre.
Because of his contributions to the.