"Rock Around the Clock" is a rock and roll song in the 12-bar blues format written by Max C. Freedman and James E. Myers (the latter being under the pseudonym "Jimmy De Knight") in 1952. The best-known and most successful rendition was recorded by Bill Haley & His Comets in 1954 for American Decca. It was a number one single for two months and did well on the United Kingdom charts; the recording also reentered the UK Singles Chart in the 1960s and 1970s.

This is the first Rock and Roll record to top the Pop Charts in both the US and UK. (Bill Haley had American chart success with "Crazy Man, Crazy" in 1953, and in 1954, "Shake, Rattle and Roll" sung by Big Joe Turner reached No. 1 on the Billboard R&B chart). Haley's recording became an anthem for rebellious 1950s youth, particularly after it was included in the 1955 film Blackboard Jungle. It was Number 1 on the pop charts for two months and went to Number 3 on the R&B chart.

The recording is widely considered to be the song that, more than any other, brought rock and roll into mainstream culture around the world. The song is ranked No. 159 on the Rolling Stone magazine's list of The 500 Greatest Songs of All Time.

Although it was first recorded by Italian-American band Sonny Dae and His Knights on March 20, 1954, Myers claimed the song had been written specifically for Haley but, for various reasons, Haley was unable to record it himself until April 12, 1954.