"Bad to Me" is a song credited to Lennon–McCartney. In late interviews, John Lennon said that he wrote it for Billy J. Kramer with The Dakotas while on holiday in Spain. However, in a 1964 interview he said that he and Paul McCartney wrote it in the back of a van, declaring McCartney a contributor. Lennon's original demo of the song was released on iTunes in December 2013 on the album The Beatles Bootleg Recordings 1963. It became one of the first occasions a Lennon–McCartney composition made the US Top 40 recorded by an artist other than the Beatles.

Lennon–McCartney was the songwriting partnership between English musicians John Lennon (1940–1980) and Paul McCartney of the Beatles. It is widely considered one of the greatest, best known and most successful musical collaborations ever by records sold, with the Beatles selling over 600 million records worldwide as of 2004. Between 5 October 1962 and 8 May 1970, the partnership published approximately 180 jointly credited songs, of which the vast majority were recorded by the Beatles, forming the bulk of their catalogue.