Momoiro Clover Z (ももいろクローバーZ, Momoiro Kurōbā Zetto) is a Japanese idol girl group, commonly abbreviated as MCZ or Momoclo (ももクロ, Momokuro).

The four members of MCZ are known for energetic performances, incorporating elements of ballet, gymnastics, and action movies.

MCZ is notable for being the first female group to hold a solo concert at National Olympic Stadium in Japan, as well as providing theme music for anime television series such as Sailor Moon, Dragon Ball, and Pokémon.

In 2013, the group grossed the fourth highest total sales revenue by a music artist in Japan, with over ¥5.2 billion. During 2016, about 636,000 people attended their live concerts, the most ever for a Japanese female group. MCZ was ranked as the most popular female Japanese group from 2013 to 2018, and 2020 to 2022.

MCZ has collaborated with other performers, including a 2015 recording with American hard rock band KISS, marking KISS's first collaborative recording. In 2016, their first overseas tour titled Trans America Ultra Live was held in Hawaii, Los Angeles, and New York. They sold more than 3 million physical copies in Japan.