Nathaniel Adams Coles (March 17, 1919 – February 15, 1965), known professionally as Nat King Cole, was an American musician who first came to prominence as a leading jazz pianist. Although an accomplished pianist, he owes most of his popular musical fame to his soft baritone voice, which he used to perform in big band and jazz genres. He was one of the first black Americans to host a television variety show, and has maintained worldwide popularity since his death.

Cole was a smoker of Kool menthol cigarettes, believing that smoking up to three packs a day gave his voice the rich sound it had (Cole would smoke several cigarettes in rapid succession before a recording). He died from lung cancer on February 15, 1965, at St. John's Hospital in Santa Monica, California.

Cole's funeral was held at St. James Episcopal Church on Wilshire Blvd. in Los Angeles. His remains were interred inside Freedom Mausoleum at Forest Lawn Memorial Park in Glendale. His last album, L-O-V-E, was recorded in early December 1964—just a few days before he entered the hospital for cancer treatment—and was released just prior to his death. It peaked at #4 on the Billboard Albums chart in the spring of 1965. A "Best Of" album went gold in 1968. His 1957 recording of "When I Fall In Love" reached #4 in the UK charts in 1987.

In 1983, an archivist for EMI Electrola Records, EMI (Capitol's parent company) Records' subsidiary in Germany, discovered some songs Cole had recorded but that had never been released, including one in Japanese and another in Spanish ("Tu Eres Tan Amable"). Capitol released them later that year as the LP "Unreleased."

Cole was inducted into both the Alabama Music Hall of Fame and the Alabama Jazz Hall of Fame. In 1990, he was awarded the Grammy Lifetime Achievement Award, and in 1997 was inducted into theDown Beat Jazz Hall of Fame. In 2007, he was inducted into the Hit Parade Hall of Fame.

In 1991, Mosaic Records released "The Complete Capitol Recordings of the Nat King Cole Trio," an 18-compact-disc set consisting of 349 songs. (This special compilation also was available as a 27-LP set.)

Cole's youngest brother, Freddy Cole, and Cole's daughter Natalie are also singers. In the summer of 1991, Natalie Cole and her father had a hit when Natalie's own newly-recorded voice track was mixed with her father's 1961 rendition of "Unforgettable" into a new duet version as part of a tribute album to her father's music. The song and album of the same name won seven Grammy awards in 1992.

There has been some confusion as to Cole's actual year of birth. Cole himself used four different dates on official documents: 1915, 1916, 1917, and 1919; however, Nathaniel is listed with his parents and older siblings in the 1920 U.S. Federal census for Montgomery, Alabama, Ward 7, with his age given as nine months old. Since this is a contemporary record, it is very likely he was born in 1919. This is also consistent with the 1930 census which finds him at age 11 with his family in Chicago, Illinois, Ward 3. In the 1920 census, the race of all members of the family (Ed, Perlina, Eddie M., Edward D., Evelina and Nathaniel Coles) is recorded as mulatto. Cole's birth year is also listed as 1919 on the Nat King Cole Society's web site.

Cole's first marriage, to Nadine Robinson, ended in 1948. On March 28, 1948 (Easter Sunday), just six days after his divorce became final, Cole married singer Maria Hawkins Ellington. Although Maria had sung with Duke Ellington's band, she was not related to Duke Ellington. The Coles were married in Harlem's Abyssinian Baptist Church by Adam Clayton Powell, Jr. They had five children: Natalie (born 1950), who herself would go on to have a successful career as a singer; adopted daughter Carole (the daughter of Maria's sister), (1944–2009), who died of lung cancer at 64; adopted son Nat Kelly Cole (1959–1995), who died of AIDS at 36; and twin daughters Casey and Timolin (born 1961).

Cole had affairs throughout his marriages. By the time he developed lung cancer, he was estranged from his wife Maria and living with actress Gunilla Hutton, best known as Nurse Goodbody of "Hee Haw" fame. But he was with Maria during his illness, and she stayed with him until his death. In an interview, Maria expressed no lingering resentment over his affairs. Instead, she emphasized his musical legacy and the class he exhibited in all other aspects of his life.

An official United States postage stamp featuring Cole's likeness was issued in 1994.

In 2000, Cole was inducted into the Rock and Roll Hall of Fame as one of the major influences for early Rock and Roll

Cole sang at the 1956 Republican National Convention in the Cow Palace, San Francisco, California, on August 23, 1956. There, his "singing of 'That's All There Is To That' was greeted with applause." He was also present at the Democratic National Convention in 1960 to throw his support behind Senator John F. Kennedy. Cole was also among the dozens of entertainers recruited by Frank Sinatra to perform at the Kennedy Inaugural gala in 1961. Cole frequently consulted with President Kennedy (and later President Johnson) on civil rights.