page_title: List of Billboard Adult Contemporary number ones of 2010
section_title: Chart history
hierarchical_section_title: List of Billboard Adult Contemporary number ones of 2010 / Chart history
caption_attribution_description: English: Mariah Carey sings at the Neighborhood Ball in downtown Washington, D.C., Jan. 20, 2009.
context_page_description: Adult Contemporary is a chart published by Billboard ranking the top-performing songs in the United States in the adult contemporary music genre. In 2010, eight different songs topped the chart in 52 issues of the magazine, based on weekly airplay data from radio stations compiled by Nielsen Broadcast Data Systems.
  On the first chart of the year, Taylor Swift was at number one with "You Belong with Me", the song's tenth consecutive week in the top spot. The song's unbroken run at the top ended at 13 weeks, although after two weeks out of the top spot it returned for one further week at number one in the issue of Billboard dated February 13. In the early portion of the year three songs had multiple spells at number one, including "Fallin' for You" by Colbie Caillat, which was twice replaced at number one only to rebound to the top of the chart. In the issue of Billboard dated April 3, country music group Lady Antebellum began a run of 13 consecutive weeks at number one with "Need You Now".
caption: Mariah Carey topped the chart with her Christmas song "Oh Santa!" for the last two weeks of December 2010.
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