The Adult Contemporary chart is published weekly by Billboard magazine and lists the most popular songs on adult contemporary radio stations in the United States. The chart is compiled based on airplay data submitted to Billboard by stations that are members of the Adult Contemporary radio panel. The chart debuted in Billboard magazine on July 17, 1961. Over the years, the chart has undergone a series of name changes, being called Easy Listening (1961–1962; 1965–1979), Middle-Road Singles (1962–1964), Pop-Standard Singles (1964–1965), Hot Adult Contemporary (1984–1996) and Adult Contemporary (1979–1984, 1996–present). The current number-one song on the chart, as of the issue of Billboard dated October 25, 2025, is "Ordinary" by Alex Warren.

The Billboard Easy listening chart, as it was first known, was born of a desire by some radio stations in the late 1950s and early 1960s to continue playing current hit songs but distinguish themselves from being branded as "rock and roll" stations. Billboard had written articles about this trend during the time, and the magazine's editors decided to publish a separate chart for these songs beginning in 1961. The magazine offered an "Easy Listening" programming guide beginning January 9, 1961, which continued until the numbered chart appeared in July. The first No. 1 song on the Billboard Easy Listening chart was "The Boll Weevil Song" by Brook Benton.

From 1961 to 1965, this chart was compiled from the Billboard Hot 100 chart by removing songs that were deemed rock and roll by the magazine and re-ranking the remaining songs. (Record World's equivalent "non-rock" chart followed the same criteria from 1967 through 1971.) Beginning in 1965, the Easy Listening chart would begin to be compiled by a method similar to the one used for other Billboard singles charts: reported playlists from radio stations airing the format as well as sales data submitted by record stores. By the early 1990s, automatic song detection and barcode sales information had begun to be the norm for most of the Billboard charts, although by this time the AC chart was based entirely on radio airplay and no longer incorporated retail sales reports. Currently the Adult Contemporary chart is compiled in much the same way as for other radio formats.

The chart was known as the Easy Listening chart until 1962, when it was renamed Middle-Road Singles. In 1964, the name changed again, this time to Pop-Standard Singles. After alternating the name of this chart twice more in less than a year, Easy Listening was again chosen as the chart name in 1965 when the change in compilation occurred. In April 1979, the Easy Listening chart officially became known as Adult Contemporary, and those two words have remained consistent in the name of the chart ever since.

In 1996, Billboard created a new chart called Adult Top 40, which reflects radio station programming that exists somewhere between "adult contemporary" music and "pop" music. Although they are sometimes mistaken for each other, the Adult Contemporary chart and the Adult Top 40 chart are separate charts, and songs reaching one chart might not reach the other. In addition, the term "hot AC" refers to another subgenre of radio programming that is distinct from the Adult Contemporary chart, despite the apparent similarity in name.

In the early years of the Easy Listening chart, the top song on the chart was generally always a Top 10 pop hit as well. The method for compiling the chart at that time allowed some rock and roll artists, such as Lesley Gore and the Drifters, to make the chart on occasion with their softer or ballad releases, regardless of whether Easy Listening and middle of the road radio stations were actually playing those songs. In 1965, no No. 1 pop hits appeared on the Easy Listening chart. After 1965, differences between the Hot 100 chart and the Easy Listening chart became more pronounced. Better reflecting what middle of the road stations were actually playing, the composition of the chart changed dramatically. As rock music continued to harden, there was much less crossover between the Hot 100 and Easy Listening chart than there had been in the early half of the 1960s.^{[citation needed]}

Several No. 1 Easy Listening hits of the late 1960s only "Bubbled Under" on the pop chart (for example, Andy Russell's 1967 version of "It's Such a Pretty World Today" that peaked at #119), or (as was the case with John Gary's 1967 hit "Cold") failed even to "Bubble Under." In 1967, only one single reached No. 1 on both charts – "Somethin' Stupid" by Frank Sinatra and Nancy Sinatra. This trend began to reverse by the end of the decade.

Notable artists with multiple No. 1 songs on this chart during the 1960s include Elvis Presley, Roy Orbison, Connie Francis, Dean Martin, Andy Williams, the 5th Dimension, and Glen Campbell. "Love Is Blue" by Paul Mauriat held the top of the Easy Listening chart for 11 weeks in 1968, which remained the longest stay at No. 1 until 1993.