Japanese girl group NiziU has released two studio albums, three extended plays, one single album, and nineteen singles.

As of December 2024, the group had sold approximately 3.3 million album and single copies in Japan.

Prior to their debut, the group released the digital extended play Make You Happy in June 2020.

The single debuted on the top of the Oricon Singles Chart and Billboard Japan Hot 100 chart, and received a platinum certification for physical sales and gold certification for digital sales, with approximately 500,000 copies sold in total.

The group's debut studio album, U, topped both the Oricon Albums Chart and the Billboard Japan Hot Albums chart, and received a platinum certification for physical sales, with approximately 250,000 copies sold.