List of Billboard 200 number-one albums of 1999

Certified as diamond by the Recording Industry Association of America (RIAA),[3] it made her the youngest artist that reach the ten million sales mark and the top selling female act of 1999.

[5] I Am…, the third studio album by rapper Nas, stayed at the top of the chart for two weeks and has been certified double platinum by the RIAA.

[6] Puerto Rican pop singer Ricky Martin's eponymous set achieved sales of six million copies, making it the year's top-selling album by a solo male artist.

[12] Human Clay, the second album by post-grunge band Creed, became a hit, entering the charts at number one and selling ten million copies over the next two years.

[15] Breathe, the fourth album by country artist Faith Hill, entered the charts at number one upon its release in late 1999.

In 1999, the Backstreet Boys ' album Millennium established a new record for the largest sales in a single week since Nielsen SoundScan began tracking sales in 1991.