Daryl Hall & John Oates, commonly known as Hall & Oates, were an American rock duo formed in Philadelphia, Pennsylvania, in 1970. The duo consisted of Daryl Hall, who was generally the lead vocalist, and John Oates, who primarily played electric guitar and provided backing vocals, occasionally taking the lead. They wrote most of their songs, either individually or collaboratively, and became famous for their unique blend of rock, soul, and rhythm and blues.

Hall & Oates achieved significant commercial success from the mid-1970s to the late 1980s. They reached the US Top 40 with 29 of their 33 singles on the Billboard Hot 100 between 1974 and 1991, with six of these reaching number one: "Rich Girl" (1977), "Kiss on My List" (1980), "Private Eyes" and "I Can't Go for That (No Can Do)" (both 1981), "Maneater" (1982), and "Out of Touch" (1984). They also had 16 US Top Ten hits, including "She's Gone", "Sara Smile", "You Make My Dreams", "Family Man", "Say It Isn't So", and "Method of Modern Love". The duo's success extended to the UK, where they had two Top Ten albums and six Top 40 singles.

The duo frequently collaborated with session musicians, notably guitarist G. E. Smith, bassist Tom "T-Bone" Wolk, drummer Mickey Curry, and multi-instrumentalist Charles DeChant. They also worked closely with sisters Sara Allen and Janna Allen on songwriting.

Hall & Oates were inducted into the Songwriters Hall of Fame in 2003 and the Rock and Roll Hall of Fame in 2014. They were recognized as the most successful duo of all time, surpassing other famous duos like the Carpenters and Simon & Garfunkel. Despite their success, they preferred to be credited with their full names, Daryl Hall & John Oates, on all their US releases. Their influence and popularity have been acknowledged with numerous accolades, including a ranking of 18th on a list of the top Hot 100 artists of all time by Billboard in 2018.