This is a list of albums that have peaked at number-one on the Oricon Albums Chart, the preeminent singles chart in Japan.
Each chart is on a week-ending format.
The chart was created on October 5, 1987, and eventually replaced the original LP chart.
In December 2018, the company launched a combined albums chart, which focuses on physical, digital, and streaming sales.
It follows from the introduction of Oricon’s digital and streaming charts in 2016 and 2018 respectively.