List of number-one albums of 1999 (Portugal)
# List of number-one albums of 1999 (Portugal)

The Portuguese Albums Chart ranks the best-performing albums in Portugal, as compiled by the Associação Fonográfica Portuguesa.

| Week | Album | Artist |
| - | - | - |
| 1/1999 | Silence Becomes It | Silence 4 |
| 2/1999 | Silence Becomes It | Silence 4 |
| 3/1999 | Silence Becomes It | Silence 4 |
| 4/1999 | Silence Becomes It | Silence 4 |
| 5/1999 | Believe | Cher |
| 6/1999 | Believe | Cher |
| 7/1999 | Believe | Cher |
| 8/1999 | Believe | Cher |
| 9/1999 | Love Stories | ABBA |
| 10/1999 | Love Stories | ABBA |
| 11/1999 | Love Stories | ABBA |
| 12/1999 | Love Stories | ABBA |
| 13/1999 | Love Stories | ABBA |
| 14/1999 | Love Stories | ABBA |
| 15/1999 | Sogno | Andrea Bocelli |
| 16/1999 | Sogno | Andrea Bocelli |
| 17/1999 | Sogno | Andrea Bocelli |
| 18/1999 | Sogno | Andrea Bocelli |
| 19/1999 | Sogno | Andrea Bocelli |
| 20/1999 | Sogno | Andrea Bocelli |
| 21/1999 | Sogno | Andrea Bocelli |
| 22/1999 | Sogno | Andrea Bocelli |
| 23/1999 | Millennium | Backstreet Boys |
| 24/1999 | Sogno | Andrea Bocelli |
| 25/1999 | Millennium | Backstreet Boys |
| 26/1999 | Sogno | Andrea Bocelli |
| 27/1999 | Millennium | Backstreet Boys |
| 28/1999 | ...Baby One More Time | Britney Spears |
| 29/1999 | Voar | Santos & Pecadores |
| 30/1999 | Millennium | Backstreet Boys |
| 31/1999 | Uma Noite Só | Trovante |
| 32/1999 | Uma Noite Só | Trovante |
| 33/1999 | Uma Noite Só | Trovante |
| 34/1999 | Voar | Santos & Pecadores |
| 35/1999 | ¡Volaré! The Very Best of the Gipsy Kings | Gipsy Kings |
| 36/1999 | ¡Volaré! The Very Best of the Gipsy Kings | Gipsy Kings |
| 37/1999 | The Party Album | Vengaboys |
| 38/1999 | The Party Album | Vengaboys |
| 39/1999 | A Little Bit of Mambo | Lou Bega |
| 40/1999 | A Little Bit of Mambo | Lou Bega |
| 41/1999 | A Little Bit of Mambo | Lou Bega |
| 42/1999 | A Little Bit of Mambo | Lou Bega |
| 43/1999 | Best | Scorpions |
| 44/1999 | Best | Scorpions |
| 45/1999 | Best | Scorpions |
| 46/1999 | Best | Scorpions |
| 47/1999 | Best | Scorpions |
| 48/1999 | Best | Scorpions |
| 49/1999 | Best | Scorpions |
| 50/1999 | S&M | Metallica and the San Francisco Symphony |
| 51/1999 | MTV Unplugged | Alanis Morissette |
| 52/1999 | MTV Unplugged | Alanis Morissette |
