List of number-one albums of 1998 (Portugal)
# List of number-one albums of 1998 (Portugal)

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

| Week | Album | Artist |
| - | - | - |
| 1/1998 | | |
| 2/1998 | Romanza | Andrea Bocelli |
| 3/1998 | Feijão Com Arroz | Daniela Mercury |
| 4/1998 | Eu Sou Aquele | Excesso |
| 5/1998 | Eu Sou Aquele | Excesso |
| 6/1998 | Eu Sou Aquele | Excesso |
| 7/1998 | Eu Sou Aquele | Excesso |
| 8/1998 | Titanic: Music from the Motion Picture | James Horner |
| 9/1998 | Titanic: Music from the Motion Picture | James Horner |
| 10/1998 | Titanic: Music from the Motion Picture | James Horner |
| 11/1998 | Titanic: Music from the Motion Picture | James Horner |
| 12/1998 | Titanic: Music from the Motion Picture | James Horner |
| 13/1998 | Titanic: Music from the Motion Picture | James Horner |
| 14/1998 | Titanic: Music from the Motion Picture | James Horner |
| 15/1998 | Titanic: Music from the Motion Picture | James Horner |
| 16/1998 | Titanic: Music from the Motion Picture | James Horner |
| 17/1998 | Vuelve | Ricky Martin |
| 18/1998 | Era | Era |
| 19/1998 | Era | Era |
| 20/1998 | Vuelve | Ricky Martin |
| 21/1998 | Era | Era |
| 22/1998 | Era | Era |
| 23/1998 | Era | Era |
| 24/1998 | Era | Era |
| 25/1998 | Adore | The Smashing Pumpkins |
| 26/1998 | Adore | The Smashing Pumpkins |
| 27/1998 | Netinho Ao Vivo! | Netinho |
| 28/1998 | Netinho Ao Vivo! | Netinho |
| 29/1998 | Netinho Ao Vivo! | Netinho |
| 30/1998 | Netinho Ao Vivo! | Netinho |
| 31/1998 | Netinho Ao Vivo! | Netinho |
| 32/1998 | Netinho Ao Vivo! | Netinho |
| 33/1998 | Netinho Ao Vivo! | Netinho |
| 34/1998 | Netinho Ao Vivo! | Netinho |
| 35/1998 | Netinho Ao Vivo! | Netinho |
| 36/1998 | Netinho Ao Vivo! | Netinho |
| 37/1998 | Silence Becomes It | Silence 4 |
| 38/1998 | Silence Becomes It | Silence 4 |
| 39/1998 | Silence Becomes It | Silence 4 |
| 40/1998 | Silence Becomes It | Silence 4 |
| 41/1998 | Silence Becomes It | Silence 4 |
| 42/1998 | Silence Becomes It | Silence 4 |
| 43/1998 | Silence Becomes It | Silence 4 |
| 44/1998 | Silence Becomes It | Silence 4 |
| 45/1998 | Silence Becomes It | Silence 4 |
| 46/1998 | Silence Becomes It | Silence 4 |
| 47/1998 | The Best of 1980–1990 | U2 |
| 48/1998 | The Best of 1980–1990 | U2 |
| 49/1998 | The Best of 1980–1990 | U2 |
| 50/1998 | The Best of 1980–1990 | U2 |
| 51/1998 | The Best of 1980–1990 | U2 |
| 52/1998 | The Best of 1980–1990 | U2 |
