List of number-one albums of 2005 (Portugal)

This is a list of albums that reached the number-one position on the Associação Fonográfica Portuguesa (AFP) album chart in Portugal during the year 2005. The AFP is the official record chart provider in Portugal, compiling weekly music charts based on physical album sales. The chart typically reflects the most popular albums in the country each week. Information presented here includes the album title, the artist(s) responsible for the album, and the date the album reached the number-one position.