"Can't Get You Out of My Head" is a song recorded by Australian singer Kylie Minogue for her eighth studio album, titled Fever, which she released in 2001. The song was released in Australia by Parlophone as the lead single from the album on 8 September 2001. It was released on 17 September 2001 in the United Kingdom. In the United States, the single was released on 18 February 2002. Jointly written, composed, and produced by Cathy Dennis and Rob Davis, "Can't Get You Out of My Head" is a midtempo dance-pop song which lyrically details Minogue's obsession towards her lover. The song is famous for its "la la la" hook.

In addition to positive reviews from music critics, "Can't Get You Out of My Head" found commercial success on a large scale. It peaked at number one on the charts of Austria, Belgium, France, Germany, Italy, Poland, Switzerland, the United Kingdom, and every other European country excluding Finland. It also topped the charts of Minogue's native country Australia, Canada and New Zealand. In the United States, the song peaked at number seven on the US Billboard Hot 100 chart, becoming Minogue's biggest hit in the region since "The Loco-Motion". "Can't Get You Out of My Head" reportedly reached number one in 40 countries across the globe. It was certified triple-platinum in Australia, double-platinum in the United Kingdom, and gold in the United States. It became Minogue's first single to sell in excess of one million copies in the United Kingdom, where it also stands as the 28th best-selling single of the millennium. As of 2013, the song was Minogue's highest selling single and one of the best-selling singles of all time, with worldwide sales exceeding eight million.

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