"Walk On" is a song by Irish rock band U2. It is the fourth track on their 2000 album, All That You Can't Leave Behind, and was released as a single in November 2001, the record's second in Canada and the fourth in the rest of the world. The song was written about Aung San Suu Kyi, a Burmese academic who was chairperson of the National League for Democracy and was placed under house arrest from 1989 until 2010 for her pro-democracy activities. The song won the Grammy Award for Record of the Year in 2002, marking the first time an artist had won the award for songs from the same album in consecutive years.

"Love, in the highest sense of the word, is the only thing that you can always take with you, in your heart. At some point you are going to have to lose everything else anyway."

In March 2000, U2 were awarded the Freedom of the City of Dublin at a ceremony where the Burmese academic Aung San Suu Kyi was honoured but absent. The band had never heard of Suu Kyi prior to that and soon developed an interest in learning about her. The group found out that her activism and fighting for freedom in Burma led to her being under house arrest since 1989 (a sentence that was later ended in 2010). "Walk On" was subsequently written about and dedicated to Suu Kyi. It was written in the form of a supporting, uplifting anthem, praising her for activism. Bono explained that the song is about "nobility and personal sacrifice, about doing what's right, even if your heart is telling you otherwise." He compares the subject of the song to a Biblical passage in Corinthians.

The album version of the song runs for 4:55. The album's title was derived from the song's lyrics, "The only baggage you can bring is all that you can't leave behind." "Walk On" originally consisted of two different songs which, according to bassist Adam Clayton, that had great riffs but sounded terrible separately. The group combined them and ended up with the arrangement that forms "Walk On."

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