Sir Elton Hercules John (born Reginald Kenneth Dwight; 25 March 1947) is a British singer, songwriter and pianist. His music and showmanship have had a significant, lasting effect on the music industry, and his songwriting partnership with the lyricist Bernie Taupin is one of the most successful in history. John was the 19th EGOT winner in history. He has sold over 300 million records worldwide, making him one of the best-selling music artists of all time.

John learnt to play piano at an early age, winning a scholarship to the Royal Academy of Music. In the 1960s he formed the blues band Bluesology, wrote songs for other artists alongside Taupin, and worked as a session musician, before releasing his debut album, Empty Sky (1969). Throughout the next six decades, John cemented his status as a cultural icon with 32 studio albums, including Honky Château (1972), Goodbye Yellow Brick Road (1973), Rock of the Westies (1975), Sleeping with the Past (1989), The One (1992), Songs from the West Coast (2001), The Diving Board (2013) and The Lockdown Sessions (2021). His catalogue of hit singles includes "Your Song", "Tiny Dancer", "Rocket Man", "Crocodile Rock", "Bennie and the Jets", "Don't Go Breaking My Heart", "I'm Still Standing", "Sacrifice", "Can You Feel the Love Tonight" and "Cold Heart". He has also had success in musical films and theatre, composing music for The Lion King (1994), Aida (2000), and Billy Elliot the Musical (2005). John's final tour, Farewell Yellow Brick Road (2018–2023), became the highest-grossing tour ever at the time. His life and career were dramatised in the 2019 biographical film Rocketman.

John is an HIV/AIDS charity fundraiser and has been involved in the fight against AIDS since the late 1980s. In 1992 he established the Elton John AIDS Foundation, which has raised over £300 million since its inception, and a year later he began hosting his annual AIDS Foundation Academy Awards Party, which has since become one of the biggest high-profile Oscars parties in the Hollywood film industry. John was the chairman and director of Watford Football Club from 1976 to 1987, and again from 1997 to 2002, and is an honorary life president of the club. From the late 1970s to the late 1980s, John developed a severe addiction to drugs and alcohol, but has been clean and sober since 1990. In 2005 he entered a civil partnership with his long-term partner, the Canadian filmmaker David Furnish. They married in 2014, when same-sex marriage was legalised in England and Wales.

John has had more than fifty top-40 hits on the UK singles chart and US Billboard Hot 100, including nine number ones in both countries, as well as seven consecutive number-one albums in the US. He is the most successful solo artist in the history of the US Billboard charts. His tribute single to Diana, Princess of Wales, "Candle in the Wind 1997", a rewritten version of his 1974 single, sold over 33 million copies worldwide and is the best-selling chart single of all time. In 2021 he became the first solo artist with UK top 10 singles across six decades. John's awards include a Primetime Emmy Award, five Grammy Awards, two Academy Awards, a Tony Award, two Golden Globe Awards, a Laurence Olivier Award and the Kennedy Center Honor. He was inducted into the Songwriters Hall of Fame in 1992 and the Rock and Roll Hall of Fame in 1994, and is a fellow of The Ivors Academy. He was appointed Knight Bachelor for services to music and charity in 1998 and was appointed a member of the Order of the Companions of Honour in 2020.

Reginald Kenneth Dwight was born on 25 March 1947 in Pinner, Middlesex (now part of the London Borough of Harrow), the eldest child of Stanley Dwight (1925–1991) and only child of Sheila Eileen (née Harris; 1925–2017), who had married in 1945. He was raised in a council house in Pinner where his maternal grandparents lived. When he was six, the family moved to a nearby semi-detached house. He was educated at Pinner Wood Junior School, Reddiford School and Pinner County Grammar School, until he was 17, when he left just before his A-Level examinations to pursue a career in music.

When John began to consider a career in music seriously, his father, who served in the Royal Air Force, tried to steer him toward a more conventional career, such as banking. John has said that his wild stage costumes and performances were his way of letting go after a restrictive childhood. Both his parents were musically inclined, his father having been a trumpet player with the Bob Millar Band, a semi-professional big band that played at military dances. The Dwights were keen record buyers, exposing John to the popular singers and musicians of the day.

John started playing his grandmother's piano as a young boy, and within a year his mother heard him picking out Émile Waldteufel's "The Skater's Waltz" by ear. After performing at parties and family gatherings, at age seven, he began formal piano lessons. He showed musical aptitude at school, including the ability to compose melodies, and gained some notoriety by playing like Jerry Lee Lewis at school functions. At age 11, he won a junior scholarship to the Royal Academy of Music. According to one of his instructors, John promptly played back, like a "gramophone record", a four-page piece by George Frideric Handel after hearing it for the first time.

For the next five years, John attended Saturday classes at the Academy in Central London, and he has said he enjoyed playing Frédéric Chopin and Johann Sebastian Bach and singing in the choir during Saturday classes, but that he was not otherwise a diligent classical student. "I kind of resented going to the Academy," he said. "I was one of those children who could just about get away without practising and still pass, scrape through the grades." He has said that he would sometimes skip classes and ride around on the London Underground. Several instructors have attested that he was a "model student", and during the last few years he took lessons from a private tutor in addition to his classes at the Academy. He left the Academy before taking the final exams.