List of number-one albums of 2004 (Australia)

The following is a list of albums that reached number one on the Australian Recording Industry Association (ARIA) Albums Chart in Australia during the year 2004. These charts are compiled by ARIA based on weekly sales of albums. The list includes the artist, album title, and the week in which the album first reached the top spot. Information is sourced from the official ARIA Charts archives. The ARIA chart week typically runs from Monday to Sunday.