These are the U.S. number-one adult contemporary singles of 2017, per the Billboard Adult Contemporary chart.
Billboard is an American entertainment media brand owned by the Billboard-Hollywood Reporter Media Group, a division of Eldridge Industries. It publishes pieces involving news, video, opinion, reviews, events, and style, and is also known for its music charts, including the Hot 100 and Billboard 200, tracking the most popular songs and albums in different genres. It also hosts events, owns a publishing firm, and operates several TV shows.
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 gone under 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 Tracks(1979–1982) and Adult Contemporary(1983–present).
 | Indicates best-performing single of 2017 Note: Year-end most popular adult contemporary songs, ranked by radio airplay detections as measured by Nielsen BDS. |
Note that Billboard publishes charts with an issue date approximately 7–10 days in advance.
| Issue date | Song | Artist | Ref. |
|---|---|---|---|
| January 7 | "Baby It's Cold Outside" | Brett Eldredge featuring Meghan Trainor | [1] |
| January 14 | "Send My Love (To Your New Lover)" | Adele | [2] |
| January 21 | "Just Like Fire" | Pink | [3] |
| January 28 | [4] | ||
| February 4 | [5] | ||
| February 11 | "Treat You Better" | Shawn Mendes | [6] |
| February 18 | [7] | ||
| February 25 | "Can't Stop the Feeling!" | Justin Timberlake | [8] |
| March 4 | [9] | ||
| March 11 | [10] | ||
| March 18 | "Don't Wanna Know" | Maroon 5 | [11] |
| March 25 | [12] | ||
| April 1 | [13] | ||
| April 8 | [14] | ||
| April 15 | [15] | ||
| April 22 | "Scars to Your Beautiful" | Alessia Cara | [16] |
| April 29 | [17] | ||
| May 6 | "Shape of You" | Ed Sheeran | [18] |
| May 13 | [19] | ||
| May 20 | [20] | ||
| May 27 | [21] | ||
| June 3 | [22] | ||
| June 10 | [23] | ||
| June 17 | [24] | ||
| June 24 | [25] | ||
| July 1 | [26] | ||
| July 8 | [27] | ||
| July 15 | [28] | ||
| July 22 | [29] | ||
| July 29 | [30] | ||
| August 5 | [31] | ||
| August 12 | [32] | ||
| August 19 | [33] | ||
| August 26 | [34] | ||
| September 2 | [35] | ||
| September 9 | [36] | ||
| September 16 | [37] | ||
| September 23 | [38] | ||
| September 30 | [39] | ||
| October 7 | [40] | ||
| October 14 | [41] | ||
| October 21 | "Something Just like This" | The Chainsmokers & Coldplay | [42] |
| October 28 | [43] | ||
| November 4 | [44] | ||
| November 11 | [45] | ||
| November 18 | "There's Nothing Holdin' Me Back" | Shawn Mendes | [46] |
| November 25 | [47] | ||
| December 2 | [48] | ||
| December 9 | [49] | ||
| December 16 | [50] | ||
| December 23 | "Santa's Coming for Us" | Sia | [51] |
| December 30 | [52] |