List of Billboard Hot 100 chart achievements and milestones

The Billboard Hot 100 is a singles chart published by Billboard that measures the most popular singles in the United States, based on sales (physical and digital), online streaming, and radio airplay. Throughout the history of the Hot 100 and its predecessor charts, many songs have set records for longevity, popularity, or number of hit singles by an individual artist.

Among these records is the longest-running number one single, a record set with "Old Town Road" by Lil Nas X, and later tied with "A Bar Song (Tipsy)" by Shaboozey—both songs spent 19 weeks at that position. The Beatles have the most number one hits on the chart, with 20 songs having reached that position.

Before the Hot 100's creation in 1958, Billboard published four singles charts: "Best Sellers in Stores", "Most Played by Jockeys", "Most Played in Jukeboxes", and "The Top 100". These charts, which had from 20 to 100 slots, were phased out in 1957 and 1958. Though technically not part of the Hot 100 chart history, some data from these charts are included for computational purposes, and to avoid unenlightening or misleading characterizations.