Richard Walter Burton (/ˈbɜːrtən/; born Richard Walter Jenkins Jr.; 10 November 1925 – 5 August 1984) was a Welsh actor.

Noted for his mellifluous baritone voice, Burton established himself as a formidable Shakespearean actor in the 1950s and gave a memorable performance as Hamlet in 1964. He was called "the natural successor to Olivier" by critic Kenneth Tynan. Burton's perceived failure to live up to those expectations disappointed some critics and colleagues; his heavy drinking added to his reputation as a great performer who had wasted his talent. Nevertheless, he is widely regarded as one of the finest actors of his generation.

Burton was nominated for an Academy Award seven times but never won. He was nominated for his performances in My Cousin Rachel (1952), The Robe (1953), Becket (1964), The Spy Who Came In from the Cold (1965), Who's Afraid of Virginia Woolf? (1966), Anne of the Thousand Days (1969) and Equus (1977). He received numerous accolades, including a BAFTA Award, a Golden Globe Award and a Grammy Award. He received the Tony Award for Best Actor in a Musical for his portrayal of King Arthur in the Lerner and Loewe musical Camelot (1960).

In the mid-1960s, Burton became a top box-office star. By the late 1960s, he was one of the highest-paid actors in the world, receiving fees of $1 million or more plus a share of the gross receipts. Burton remained closely associated in the public mind with his second wife, Elizabeth Taylor. The couple's turbulent relationship, married twice and divorced twice, was rarely out of the news.

Burton was born Richard Walter Jenkins Jr. on 10 November 1925 in a house at 2 Dan-y-bont in Pontrhydyfen, Glamorgan, Wales. He was the twelfth of thirteen children born into the Welsh-speaking family of Richard Walter Jenkins Sr. (5 March 1876 – 25 March 1957), and Edith Maude Jenkins (née Thomas; 28 January 1883 – 31 October 1927). Jenkins Sr., called Daddy Ni by the family, was a coal miner, while his mother worked as a barmaid at a pub called the Miners Arms in the village where she met her husband. They married, without approval of her parents, at Neath Register Office on 24 December 1900. According to biographer Melvyn Bragg, Richard is quoted saying that Daddy Ni was a "twelve-pints-a-day man" who sometimes went off on drinking and gambling sprees for weeks, and that "he looked very much like me". Jenkins Sr. was badly burned in a mining explosion and his father Thomas relied on a wheelchair after a mining accident.

He remembered his mother to be "a very strong woman" and "a religious soul with fair hair and a beautiful face". Richard was barely two years old when his mother died on 31 October, six days after the birth of Graham, the family's thirteenth child. Edith's death was a result of postpartum infections; Richard believed it occurred because of "hygiene neglect". According to biographer Michael Munn, Edith "was fastidiously clean", but her exposure to the dust from the coal mines resulted in her death. Following Edith's death, Richard's elder sister Cecilia, whom he affectionately addressed as "Cis", and her husband Elfed James, also a miner, took him under their care until the age of seventeen. Richard lived with Cis, Elfed and their two daughters, Marian and Rhianon, in their three-bedroom terraced cottage on 73 Caradoc Street, Taibach, a suburban district in Port Talbot, which Bragg describes as "a tough steel town, English-speaking, grind and grime".

Richard remained grateful and loving to Cis throughout his life, later going on to say: "When my mother died she, my sister, had become my mother, and more mother to me than any mother could ever have been ... I was immensely proud of her ... she felt all tragedies except her own". Daddy Ni would occasionally visit the homes of his grown daughters but was otherwise absent. Another important figure in Richard's early life was Ifor, his brother, 19 years his senior. A miner and rugby union player, Ifor "ruled the household with the proverbial firm hand". He was also responsible for nurturing a passion for rugby in young Richard. Although Richard also played cricket, tennis, and table tennis, biographer Bragg notes rugby union football to be his greatest interest. On rugby, Richard said he "would rather have played for Wales at Cardiff Arms Park than Hamlet at The Old Vic". The Welsh rugby union centre, Bleddyn Williams, believed Richard "had distinct possibilities as a player".

From the age of five to eight, Richard was educated at the Eastern Primary School, and he attended the boys' segment of the same school from eight to twelve years old. He took a scholarship exam for admission into Port Talbot Secondary School in March 1937 and passed it. Biographer Hollis Alpert notes that both Daddy Ni and Ifor considered Richard's education to be "of paramount importance" and planned to send him to the University of Oxford. Richard became the first member of his family to go to secondary school. He displayed an excellent speaking and singing voice from childhood, even winning an eisteddfod prize as a boy soprano. While a pupil at Port Talbot Secondary School, Richard also showed immense interest in reading poetry as well as English and Welsh literature. He earned pocket money by running messages, hauling horse manure, and delivering newspapers.