List of Billboard Easy Listening number ones of 1970

In 1970, Billboard magazine published a chart ranking the top-performing songs in the United States in the easy listening market. The chart, which in 1970 was entitled Easy Listening, has undergone various name changes and since 1996 has been published under the title Adult Contemporary. In 1970, 16 songs topped the chart based on playlists submitted by easy listening radio stations and sales reports submitted by stores.

In the issue of Billboard dated January 3, the number one position was held by "Raindrops Keep Fallin' on My Head" by B. J. Thomas, which was in its third week in the top spot, and in the same week moved in the top spot on Billboard's pop music chart, the Hot 100. It remained atop the Easy Listening chart for the first four weeks of the year before being replaced by "Without Love (There Is Nothing)" by the Welsh singer Tom Jones. Thomas and Jones returned to number one later in the year with "I Just Can't Help Believing" and "Daughter of Darkness" respectively, and were two of the four acts to achieve two Easy Listening number ones in 1970. Elvis Presley reached the top spot with both "The Wonder of You" and "You Don't Have to Say You Love Me" and the Carpenters had number ones with both "(They Long to Be) Close to You" and "We've Only Just Begun". The former song was the breakthrough hit for the Carpenters, also topping the Hot 100 and launching a period of international stardom for the brother-sister duo. After spending six weeks in the top spot of the Easy Listening chart in July and August with "(They Long to Be) Close to You", the Carpenters spent a further seven weeks at number one in October and November with "We've Only Just Begun", the longest unbroken run of the year atop the chart. The duo's total of 13 weeks spent at number one was the most by any act in 1970.

In April, the Beatles achieved their first and only number one on the Easy Listening chart with "Let It Be". Although the British quartet had achieved huge success in the United States, spearheading the so-called British Invasion of the American market, few of their hits had been considered easy listening by Billboard; "Let it Be" was only their third song to appear on the chart. Within days of the song topping the chart, Paul McCartney announced his departure from the group, instigating a split which was complete by the end of the year, bringing to an end the career of a band widely regarded as the most successful and influential of all time. "Let It Be" also topped the Hot 100, as did "Bridge over Troubled Water" by Simon & Garfunkel, and "Everything is Beautiful" by Ray Stevens. The final Easy Listening number one of the year was "It's Impossible" by Perry Como, which held the top spot for the final four weeks of 1970.