A statement from Buckingham Palace said: "It is with deep sorrow that Her Majesty The Queen has announced the death of her beloved husband, His Royal Highness The Prince Philip, Duke of Edinburgh. His Royal Highness passed away peacefully this morning at Windsor Castle."
The Duke was married to Queen Elizabeth II for more than 70 years and became the longest-serving consort in British history.
Can you remember being in the crowds or meeting the Duke of Edinburgh when he visited Derbyshire?
1. Remembering Prince Philip
The Queen and the Duke of Edinburgh tour Chesterfield's weekly market meeting stall holders and visitors in 2003.
Photo: Chris Lawton
2. Remembering Prince Philip
The Duke of Edinburgh visits Alfreton Baths in 1964.
Photo: George Eyre
3. Remembering Prince Philip
The Queen and the Duke of Edinburgh at John Smedley at Lea Bridge in Matlock.
4. Remembering Prince Philip
The Duke of Edinburgh looks up... and smiles. What's up there? Boys rock climbing at Castle Naze during one of the Duke's visits to Derbyshire.