"You Belong with Me" is a country pop song performed by American recording artist Taylor Swift. The song was co-written by Swift and Liz Rose and produced by Nathan Chapman with Swift's aid. It was released on April 21, 2009, by Big Machine Records as the third single from Swift's second studio album, Fearless (2008). Swift was inspired to write "You Belong with Me" after overhearing a male friend of hers arguing with his girlfriend through a phone call; she continued to develop a story line afterward. The song contains many pop music elements and its lyrics have Swift desiring an out-of-reach love interest.

Critical reception for "You Belong with Me" was middling to positive. At the 52nd Grammy Awards, the song received nominations for the Grammy Awards for Song of the Year, Record of the Year, and Best Female Pop Vocal Performance. "You Belong with Me" enjoyed commercial success as well; it became a top ten hit in Australia, Canada, New Zealand, and the United States. In the United States, the song became Swift's best-charting single on the Billboard Hot 100 to date and Swift's second best-selling single. It managed to gain the largest crossover radio audience since Faith Hill's "Breathe" did in 2000. The single was certified quadruple platinum by the Recording Industry Association of America (RIAA).