"22" is a song recorded by American singer-songwriter Taylor Swift for her fourth album, Red (2012). It was written by Swift along with Max Martin and Shellback. The song was released as the album's fourth single on March 12, 2013. The lyrics describe the joys of being 22 years old.

The song peaked at 20 on the Billboard Hot 100, becoming the sixth single from Red to hit the top 20.

After writing her third studio album Speak Now (2010) entirely solo, Swift opted to collaborate with different songwriters and producers for Red. Thus, she called Max Martin and Shellback, two songwriters and producers whose work she admired, to discuss a possible collaboration. She told Billboard magazine: "For me, being 22 has been my favorite year of my life. I like all the possibilities of how you're still learning, but you know enough. You still know nothing, but you know that you know nothing. You're old enough to start planning your life, but you're young enough to know there are so many unanswered questions. That brings about a carefree feeling that is sort of based on in-decision and fear and at the same time letting loose. Being 22 has taught me so much".

The song was officially supposed to impact contemporary hit radio in the U.S. on March 5, 2013, before being pushed back by one week to March 12, 2013, and in the UK on March 31, 2013. An exclusive limited edition individually numbered CD single was also released exclusively to Swift's store on March 13, 2013, the same day the music video was released. The CD single was sold by itself or via an exclusive package with the Red Tour items and a T-shirt.

"22" is a pop song lasting three minutes and 52 seconds, mainly accompanied by a twangy acoustic guitar, invoking a country pop influence from Taylor Swift's conventional repertoire. The song is written in the key of G major with a tempo of 104 beats per minute. Swift's vocals span one and a half octaves, between G₃ and D₅. The song was written by Swift, along with Max Martin and Shellback, who helped her in writing and producing her previous hits "We Are Never Ever Getting Back Together" and "I Knew You Were Trouble". The lyrics describe the joys and the happiness of being 22 years old.

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