List of Billboard Hot 100 number ones of 1979

Here are the Billboard Hot 100 number-one hits of 1979.

That year, 10 acts earned their first number one song: Gloria Gaynor, Amii Stewart, Blondie, Peaches & Herb, Anita Ward, The Knack, Robert John, M, Styx, and Rupert Holmes; only Blondie would ever have another number one hit.

The Bee Gees and Donna Summer were the only acts to have more than one new song reach number one in 1979.

An asterisk (*) by a date indicates an unpublished, "frozen" week, due to the special double issues that Billboard published in print at the end of the year for their year-end charts.