List of Billboard Hot 100 number-one singles of 2013

The Billboard Hot 100 is a chart that ranks the best-performing singles of the United States. Its data, published by Billboard magazine and compiled by Nielsen SoundScan, is based collectively on each single's weekly physical and digital sales, as well as airplay and streaming. In 2013, a total of 11 singles claimed the top spot in 52 issues of the magazine. One of which, "Locked Out of Heaven" by singer Bruno Mars started its peak position in late 2012.

Throughout 2013, eight acts achieved their first US number-one single, either as a lead artist or a featured guest: Macklemore & Ryan Lewis,Wanz, Baauer, Nate Ruess, Ray Dalton, Robin Thicke, Miley Cyrus and Lorde. Five collaboration singles topped the chart. Macklemore & Ryan Lewis' debut single "Thrift Shop" featuring Wanz became the best-performing single of 2013, peaking atop the chart for six weeks, also topping the Billboard Year-End Hot 100. The duo's second hit "Can't Hold Us" also reached the chart's top spot, making the duo the first act to score number-one singles on the Hot 100 with their first two charting songs since Lady Gaga with her hits "Just Dance" and "Poker Face" in 2009. Baauer scored his first number-one hit with "Harlem Shake". Originally, it was released commercially in June 2012, yet it did not sell significantly until February due to viral videos on YouTube and later created a meme with the same name.

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