List of Oricon number-one albums of 2018

The following is a list of Oricon number-one albums of 2018. Oricon supplies statistics and information on music and the music industry in Japan. It is also the first year where the combined albums chart was introduced, which is based on physical and digital sales, as well as streaming. The first number-one album on the combined chart was Radwimps' Anti Anti Generation on December 24.