"Without You" is a song written by Pete Ham and Tom Evans of British rock group Badfinger, and first released on their 1970 album No Dice. The power ballad has been recorded by over 180 artists, and versions released as singles by Harry Nilsson (1971), T. G. Sheppard (1983) and Mariah Carey (1994) became international best-sellers. The Nilsson version was included in 2021's Rolling Stone's 500 Greatest Songs of All Time. Paul McCartney once described it as "the killer song of all time".

Peter William Ham was a Welsh singer, songwriter and guitarist best known as a lead vocalist of and composer for the 1970s rock band Badfinger, whose hit songs include "No Matter What", "Day After Day" and "Baby Blue". He also co-wrote the ballad "Without You", a worldwide number-one hit for Harry Nilsson that has become a standard covered by hundreds of artists. Ham was granted two Ivor Novello Awards related to the song in 1973.