A record chart, in the music industry, also called a music chart, is a ranking of recorded music according to certain criteria during a given period. Many different criteria are used in worldwide charts, often in combination. These include record sales, the amount of radio airplay, the number of downloads, and the amount of streaming activity.

Some charts are specific to a particular musical genre and most to a particular geographical location. The most common period covered by a chart is one week with the chart being printed or broadcast at the end of this time. Summary charts for years and decades are then calculated from their component weekly charts. Component charts have become an increasingly important way to measure the commercial success of individual songs.

A common format of radio and television programs is to run down a music chart.

The first record chart was founded in 1952 by Percy Dickins, who was working at New Musical Express at the time. Dickins would telephone roughly twenty UK record stores and ask what their best-selling records were that week. Several similar charts followed after the success of the NME chart, including Melody Maker and Record Retailer.

In the US, Billboard introduced the Hot 100 on August 4, 1958, as the first chart to fully integrate sales and airplay data. Before this, Billboard published separate rankings such as "Best Sellers in Stores," "Most Played by Jockeys" (later revived as Hot 100 Airplay), and "Most Played in Juke Boxes." From 1958 to 1991, the Hot 100 was based on radio playlists and retail surveys. On November 30, 1991, Billboard introduced a new method of determining the Hot 100: "by a combination of actual radio airplay monitored electronically by Nielsen Broadcast Data Systems (BDS), additional playlists from small-market stations, and actual point-of-sale information provided by Nielsen SoundScan." Until 1998, only physically released singles could chart. In recent decades, traditional band-oriented music has declined on the charts, particularly in the US, as solo artists and electronic-based productions gained dominance.

A chart hit is a recording, identified by its inclusion in a chart that uses sales or other criteria to rank popular releases, that ranks highly in popularity compared to other songs in the same timeframe. Chart-topper and related terms (like number one, No. 1 hit, top of the charts, chart hit, and so forth) are widely used in common conversation and in marketing, and are loosely defined. Because of its value in promoting recording artists and releases, both directly to the consumer, and by encouraging exposure on radio, TV, and other media, chart positioning has long been a subject of scrutiny and controversy. Chart compilation methodology and data sources vary, ranging from "buzz charts" (based on opinions of various experts and tastemakers), to charts that reflect empirical data such as retail sales. Therefore, a chart-topper may be anything from an "insiders' pick" to a runaway seller. Most charts that are used to determine extant mainstream popularity rely on measurable data.

Record chart performance is inherently relative, as they rank songs, albums, and records in comparison to each other at the same time, as opposed to music recording sales certification methods, which are measured in absolute numbers. Comparing the chart positions of songs at different times thus does not provide an accurate comparison of a song's overall impact. The nature of most charts, particularly weekly charts, also favors songs that sell very well for a brief period; thus, a song that is only briefly popular may chart higher than a song that sells more copies in the long range, but more slowly. As a result, a band's biggest hit single may not be its best-selling single.

There are several commonly used terms when referring to a music/entertainment chart or the performance of a release thereon.