Prince Harry, Duke of Sussex (Henry Charles Albert David; born 15 September 1984), is a member of the British royal family. As the younger son of King Charles III and Diana, Princess of Wales, he is fifth in the line of succession to the British throne.

Educated at Wetherby School, Ludgrove School, and Eton College, Harry completed army officer training at the Royal Military Academy Sandhurst. He was commissioned as a cornet into the Blues and Royals and served briefly with his older brother, William. Harry was twice deployed on active duty to Afghanistan; first in 2007–2008 for ten weeks in Helmand Province, and then for twenty weeks in 2012–2013 with the Army Air Corps.

Inspired by the Warrior Games in the United States, Harry launched the Invictus Games in 2014 as founding patron and remains involved. Two years later, alongside his brother William and sister-in-law Catherine, Harry jointly initiated the mental health awareness campaign "Heads Together".

In 2018 Harry was made Duke of Sussex prior to his wedding to American actress Meghan Markle. They have two children: Archie and Lilibet. Harry and Meghan stepped down as working royals in January 2020, moved to Meghan's native Southern California, and launched Archewell Inc., a Beverly Hills-based mix of for-profit and not-for-profit business organisations. In March 2021, Harry sat for Oprah with Meghan and Harry, a much-publicised American television interview with his wife and Oprah Winfrey. The couple filmed Harry & Meghan, a Netflix docuseries, which was released in December 2022. In 2023, Harry released his memoir, Spare.

Harry was born in the Lindo Wing of St Mary's Hospital in Paddington, London, on 15 September 1984 at 4:20 pm as the second child of Charles, Prince of Wales (later King Charles III), and his first wife, Diana, Princess of Wales, during the reign of his paternal grandmother Queen Elizabeth II. He was christened Henry Charles Albert David on 21 December 1984 at St George's Chapel, Windsor Castle, by Robert Runcie, the then archbishop of Canterbury. Growing up, he was referred to as "Harry" by family, friends, and the public, and was nicknamed "Harold" by his brother. Harry and his elder brother, William, were raised at Kensington Palace in London, and Highgrove House in Gloucestershire. Diana wanted her sons to have a broader range of experiences and a better understanding of ordinary life than previous royal children. She took them to venues that ranged from Walt Disney World and McDonald's to AIDS clinics and homeless shelters. Harry began accompanying his parents on official visits at an early age; his first overseas tour was with his parents to Italy in 1985. He also travelled with his family to Canada in 1991 and 1998.

Harry's parents divorced in 1996. His mother died in a car crash in Paris the following year while he and William were staying with their father at Balmoral Castle. Their father informed them about their mother's death. At his mother's funeral, Harry, then aged 12, accompanied his father, brother, paternal grandfather Prince Philip, Duke of Edinburgh, and maternal uncle Charles Spencer, 9th Earl Spencer, in walking behind the funeral cortège from Kensington Palace to Westminster Abbey. Harry and his brother William inherited the "bulk" of the £12.9 million left by their mother on their respective 30th birthdays, a figure that had grown since her 1997 death to £10 million each in 2014. In 2014 Harry and William inherited their mother's wedding dress along with many of her other personal possessions, including dresses, diamond tiaras, jewels, letters, and paintings. The brothers also received the original lyrics and score of "Candle in the Wind", by Bernie Taupin and Elton John, as performed by John at Diana's funeral. In 2002 The Times reported that Harry would also share with his brother a disbursement of £4.9 million from trust funds established by their great-grandmother, Queen Elizabeth The Queen Mother, on their respective 21st birthdays and would share a disbursement of £8 million upon their respective 40th birthdays. It was reported that Harry would inherit the bulk of the money left by the Queen Mother for the two brothers, as William is set to ascend to the throne, which will bring him additional financial benefits.

Like his father and brother, Harry was educated at private schools. He started at London's Jane Mynors' nursery school and the pre-preparatory Wetherby School. Following this, he attended Ludgrove School in Berkshire. After passing entrance exams, he was admitted to Eton College. The decision to place Harry at Eton went against the past practice of the Mountbatten-Windsors to send children to Gordonstoun, which his grandfather, father, two uncles, and two cousins had attended. It did, however, see Harry follow in his elder brother's footsteps and the Spencer family's, as both his mother's father and her brother attended Eton. As was the case with his brother, the royal family and the tabloid press agreed Harry would be allowed to study free from intrusion in exchange for occasional photograph opportunities in what became known as the "pressure cooker agreement".

In June 2003, Harry completed his education at Eton with two A-Levels, achieving a grade B in art and D in geography, having decided to drop history of art after AS level. He has been described as "a top tier athlete", having played competitive polo and rugby union. One of his former teachers, Sarah Forsyth, has asserted that he was a "weak student" and that staff at Eton conspired to help him cheat on examinations. Both Eton and Harry denied the claims. While a tribunal made no ruling on the cheating claim, it "accepted the prince had received help in preparing his A-level 'expressive' project, which he needed to pass to secure his place at Sandhurst." Harry also joined the Combined Cadet Force while studying at Eton and was made cadet officer in his final year, leading the corps' annual parade at the Eton tattoo.